Document and Entity Information	12 Months Ended
Document and Entity Information	Dec. 31, 2018 USD ($) shares
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	MCCCB
Entity Registrant Name	MEDIACOM BROADBAND LLC
Entity Central Index Key	0001161364
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	No
Entity Voluntary Filers	Yes
Entity Filer Category	Non-accelerated Filer
Entity shell company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding \| shares	0
Entity Public Float \| $	$ 0

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash	$ 29,964	$ 12,606
Accounts receivable, net of allowance for doubtful accounts of $3,554 and $3,364	40,252	71,994
Prepaid expenses and other current assets	24,347	22,881
Total current assets	94,563	107,481
Property, plant and equipment, net of accumulated depreciation of $1,730,750 and $1,663,609	850,638	825,348
Franchise rights	1,176,364	1,176,908
Goodwill	195,855	195,945
Other assets, net of accumulated amortization of $5,761 and $4,788	14,312	11,001
Total assets	2,331,732	2,316,683
CURRENT LIABILITIES
Accounts payable, accrued expenses and other current liabilities	146,080	147,739
Accounts payable-affiliates	20,104	22,154
Deferred revenue-current	22,345	41,382
Current portion of long-term debt	20,500	20,500
Total current liabilities	209,029	231,775
Long-term debt, net (less current portion)	1,190,557	1,537,080
Deferred revenue - non-current	8,237
Total liabilities	1,407,823	1,768,855
Commitments and contingencies (Note 10)
PREFERRED MEMBERS' INTEREST (Note 7)	150,000	150,000
MEMBER'S EQUITY
Capital contributions (distributions)	99,358	(98,268)
Retained earnings	674,551	496,096
Total member's equity	773,909	397,828
Total liabilities, preferred members' interest and member's equity	$ 2,331,732	$ 2,316,683

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,554	$ 3,364
Accumulated depreciation on property, plant and equipment	1,730,750	1,663,609
Accumulated amortization on other assets	$ 5,761	$ 4,788

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenues	$ 1,100,676	$ 1,059,086	$ 1,033,239
Costs and expenses:
Service costs (exclusive of depreciation and amortization)	456,527	439,990	419,406
Selling, general and administrative expenses	197,594	194,629	193,669
Management fee expense	24,000	21,665	20,800
Depreciation and amortization	152,695	172,333	147,114
Operating income	269,860	230,469	252,250
Interest expense, net	(57,147)	(70,089)	(78,725)
(Loss) gain on derivatives, net	(2,154)	2,828	1,203
Loss on early extinguishment of debt (Note 6)	(12,216)	(2,623)	(1,156)
Other expense, net	(657)	(1,329)	(1,686)
Net income	197,686	159,256	171,886
Dividend to preferred members (Note 7)	(18,000)	(18,000)	(18,000)
Net income applicable to member	$ 179,686	$ 141,256	$ 153,886

Consolidated Statements of Changes in Member's Equity - USD ($) $ in Thousands	Total	Capital Distributions [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2015	$ 95,461	$ (105,493)	$ 200,954
Net income	171,886		171,886
Dividend payments to related party on preferred members' interest	(18,000)		(18,000)
Capital contributions from parent	75,000	75,000
Capital distributions to parent	(7,000)	(7,000)
Other	145	145
Balance at Dec. 31, 2016	317,492	(37,348)	354,840
Net income	159,256		159,256
Dividend payments to related party on preferred members' interest	(18,000)		(18,000)
Capital contributions from parent	60,000	60,000
Capital distributions to parent	(121,050)	(121,050)
Other	130	130
Balance at Dec. 31, 2017	397,828	(98,268)	496,096
Net income	197,686		197,686
Dividend payments to related party on preferred members' interest	(18,000)		(18,000)
Capital contributions from parent	208,000	208,000
Capital distributions to parent	(10,500)	(10,500)
Revenue recognition adoption (Note 12)	(1,231)		(1,231)
Other	126	126
Balance at Dec. 31, 2018	$ 773,909	$ 99,358	$ 674,551

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 197,686	$ 159,256	$ 171,886
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	152,695	172,333	147,114
Deferred compensation	818
Loss (gain) on derivatives, net	2,154	(2,828)	(1,203)
Loss on early extinguishment of debt	2,651	2,623	1,156
Amortization of deferred financing costs	4,257	3,839	5,617
Debt extinguishment costs	9,565
Changes in assets and liabilities:
Accounts receivable, net	(1,106)	(4,270)	2,019
Prepaid expenses and other assets	7,199	(7,490)	(2,414)
Accounts payable, accrued expenses and other current liabilities	(4,950)	(5,543)	5,892
Accounts payable-affiliates	(2,050)	7,302	4,060
Deferred revenue - current	(490)	1,526	1,952
Deferred revenue - non-current	275
Other non-current liabilities		(1,486)	(45)
Net cash flows provided by operating activities	368,704	325,262	336,034
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(178,061)	(181,477)	(179,696)
Change in accrued property, plant and equipment	3,357	1,825	(3,841)
Proceeds from sale of assets	991	472	248
Net cash flows used in investing activities	(173,713)	(179,180)	(183,289)
CASH FLOWS FROM FINANCING ACTIVITIES:
New borrowings of bank debt	438,125	1,599,538	378,575
Repayment of bank debt	(490,750)	(1,650,538)	(580,325)
Redemption of senior notes	(300,000)
Dividend payments on preferred members' interest (Note 7)	(18,000)	(18,000)	(18,000)
Capital contributions from parent (Note 8)	208,000	60,000	75,000
Capital distributions to parent (Note 8)	(10,500)	(121,050)	(7,000)
Debt extinguishment costs	(9,565)
Financing costs		(13,302)
Other financing activities	5,057	(4,332)	2,771
Net cash flows used in financing activities	(177,633)	(147,684)	(148,979)
Net change in cash	17,358	(1,602)	3,766
CASH, beginning of year	12,606	14,208	10,442
CASH, end of year	29,964	12,606	14,208
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest, net of amounts capitalized	59,172	$ 69,809	$ 76,738
Non-cash items:
Accounts receivable/deferred revenue - adjustment	32,848
Prepaid expenses and other current assets/deferred revenue - adjustment	15,756
Prepaid expenses and other current assets-reclassification	7,371
Deferred revenue-current/non-current-reclassification	7,962
Accounts payable/deferred revenue current-reclassification	$ 6,507

Organization	12 Months Ended
Organization	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. ORGANIZATION Mediacom Broadband LLC (“Mediacom Broadband,” and collectively with its subsidiaries, “we,” “our” or “us”) is a Delaware limited liability company wholly-owned by Mediacom Communications Corporation (“MCC”). MCC is involved in the acquisition and operation of cable systems serving smaller cities and towns in the United States, and its cable systems are owned and operated through our operating subsidiaries and those of Mediacom LLC, a New York limited liability company wholly-owned by MCC. As limited liability companies, we and Mediacom LLC are not subject to income taxes and, as such, are included in the consolidated federal and state income tax returns of MCC, a C corporation. Our principal operating subsidiaries conduct all of our consolidated operations and own substantially all of our consolidated assets. Our operating subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to make funds available to us. We rely on our parent, MCC, for various services such as corporate and administrative support. Our financial position, results of operations and cash flows could differ from those that would have resulted had we operated autonomously or as an entity independent of MCC. See Notes 8 and 9. Mediacom Broadband Corporation (“Broadband Corporation”), a Delaware corporation wholly-owned by us, co-issued, jointly and severally with us, public debt securities. Broadband Corporation has no operations, revenues or cash flows and has no assets, liabilities or stockholders’ equity on its balance sheet, other than a one-hundred dollar receivable from an affiliate and the same dollar amount of common stock. Therefore, separate financial statements have not been presented for this entity.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Preparation of Consolidated Financial Statements

The consolidated financial statements include the accounts of us and our subsidiaries. All intercompany transactions and balances have been eliminated. Comprehensive income is equal to net income for all periods presented. The preparation of the consolidated financial statements in conformity with generally accepted accounting principles in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include: assessment and valuation of intangibles, accounts receivable allowance, useful lives of property, plant and equipment and capitalized labor. Actual results could differ from those and other estimates.

Reclassifications

Certain reclassifications have been made to prior year amounts to conform to the current year presentation.

Revenue Recognition

Video, high speed data (“HSD”), phone and business services revenues are recognized when the services are provided to our customers. We generally bill customers in advance for the services and equipment they have chosen to use and record such amounts as deferred revenue until the services are provided and the equipment is used. Deposits and up-front fees collected from customers are recognized as deferred revenue until the earnings process is complete. Credit risk is managed by disconnecting services to customers who are deemed to be delinquent. Installation revenues, or non-refundable up-front fees, are recognized over the life of the contract with the customer or the average life of the customer relationship. Advertising sales are recognized in the period that the advertisements are exhibited. Under the terms of our franchise agreements, we are required to pay local franchising authorities up to 5% of our gross revenues derived from providing video service. We normally pass these fees through to our customers. Because franchise fees are our obligation, we present them on a gross basis with a corresponding expense.

Allowance for Doubtful Accounts

The allowance for doubtful accounts represents our best estimate of probable losses in the accounts receivable balance. The allowance is based on the number of days outstanding, customer balances, recoveries, historical experience and other currently available information.

Concentration of Credit Risk

Our accounts receivable are comprised of amounts due from customers in varying regions throughout the United States. Concentration of credit risk with respect to these receivables is limited due to the large number of customers comprising our customer base and their geographic dispersion. We invest our cash with high quality financial institutions.

Property, Plant and Equipment

Property, plant and equipment are recorded at cost. Additions to property, plant and equipment generally include material, labor and indirect costs. Depreciation is calculated on a straight-line basis over the following useful lives:


Buildings		10 - 40 years
Leasehold improvements		Lesser of: life of respective lease or life of asset
Cable systems, equipment and customer devices		3-20 years
Vehicles		4-5 years
Furniture, fixtures, and office equipment		5 years

We capitalize improvements that extend asset lives and expense repairs and maintenance as incurred. At the time of retirements, write-offs, sales or other dispositions of property, the original cost and related accumulated depreciation are removed from the respective accounts and any resulting gains or losses are included in depreciation and amortization expense in the consolidated statement of operations.

We capitalize the costs associated with the construction of cable transmission and distribution facilities, new customer installations and indirect costs associated with our phone service. Costs include direct labor and material, as well as certain indirect costs including capitalized interest. We perform periodic evaluations of the estimates used to determine the amount and extent that such costs are capitalized. Any changes to these estimates, which may be significant, are applied in the period in which the evaluations were completed. The costs of disconnecting service at a customer’s dwelling or reconnecting to a previously installed dwelling are charged as expense in the period incurred. Costs associated with subsequent installations of additional services not previously installed at a customer’s dwelling are capitalized to the extent such costs are incremental and directly attributable to the installation of such additional services. See Note 3.

Capitalized Software Costs

We account for internal-use software development and related costs in accordance with Accounting Standards Codification (“ASC”) 350-40-Intangibles-Goodwill and Other: Internal-Use Software. Software development and other related costs consist of external and internal costs incurred in the application development stage to purchase and implement associated software. Costs incurred in the development of application and infrastructure of the software is capitalized and will be amortized over our respective estimated useful life of 5 years. During the years ended December 31, 2018 and 2017, we amortized approximately $0.1 million and wrote off $4.8 million of software development costs (all of which were fully amortized) and we amortized approximately $0.2 million and wrote off $3.3 million of software development costs ($2.8 million of which was fully amortized), respectively. Capitalized software had a net book value of less than $0.1 million for both December 31, 2018 and 2017.

Marketing and Promotional Costs

Marketing and promotional costs are expensed as incurred and were $39.4 million, $38.6 million and $35.7 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Intangible Assets

Our cable systems operate under non-exclusive cable franchises, or franchise rights, granted by state and local governmental authorities for varying lengths of time. We acquired these cable franchises through acquisitions of cable systems and were accounted for using the purchase method of accounting. As of December 31, 2018, we held 478 franchises in areas located throughout the United States. The value of a franchise is derived from the economic benefits we receive from the right to solicit new customers and to market our products and services, including video, HSD and phone, in a specific market territory. We concluded that our franchise rights have an indefinite useful life since, among other things, there are no legal, regulatory, contractual, competitive, economic or other factors limiting the period over which these franchise rights contribute to our revenues and cash flows. Goodwill is the excess of the acquisition cost of an acquired entity over the fair value of the identifiable net assets acquired. In accordance with ASC 350 — Intangibles — Goodwill and Other (“ASC 350”), we do not amortize franchise rights and goodwill. Instead, such assets are tested annually for impairment or more frequently if impairment indicators arise.

We follow the provisions of ASC 350 to test our goodwill and franchise rights for impairment. We assess the fair values of our reporting unit using the Excess Earnings Method of the Income Approach as our discounted cash flow (“DCF”) methodology, under which the fair value of cable franchise rights are determined in a direct manner. We employ the Multi-Period Excess Earnings Method to calculate the fair values of our cable franchise rights, using unobservable inputs (Level 3). This assessment involves significant judgment, including certain assumptions and estimates that determine future cash flow expectations and other future benefits, which are consistent with the expectations of buyers and sellers of cable systems in determining fair value. These assumptions and estimates include discount rates, estimated growth rates, terminal growth rates, comparable company data, revenues per customer, market penetration as a percentage of homes passed and operating margin. We also consider market transactions, market valuations, research analyst estimates and other valuations using multiples of operating income before depreciation and amortization to confirm the reasonableness of fair values determined by the DCF methodology. We also employ the Greenfield model to corroborate the fair values of our cable franchise rights determined under the In-use Excess Earnings DCF methodology. Significant impairment in value resulting in impairment charges may result if the estimates and assumptions used in the fair value determination change in the future. Such impairments, if recognized, could potentially be material.

Based on the guidance outlined in ASC 350, we have determined that the unit of accounting or reporting unit, for testing goodwill and franchise rights is Mediacom Broadband. Comprising cable system clusters across several states, Mediacom Broadband is at the financial reporting level that is managed and reviewed by the corporate office (i.e., chief operating decision maker) including our determination as to how we allocate capital resources and utilize the assets. The reporting unit level also reflects the level at which the purchase method of accounting for our acquisitions was originally recorded.

In accordance with ASC 350, we are required to determine goodwill impairment using a two-step process. The first step compares the fair value of a reporting unit with our carrying amount, including goodwill. If the fair value of the reporting unit exceeds our carrying amount, goodwill of the reporting unit is considered not impaired and the second step is unnecessary. If the carrying amount of a reporting unit exceeds our fair value, the second step is performed to measure the amount of impairment loss, if any. The second step compares the implied fair value of the reporting unit’s goodwill, calculated using the residual method, with the carrying amount of that goodwill. If the carrying amount of the goodwill exceeds the implied fair value, the excess is recognized as an impairment loss.

The impairment test for our franchise rights and other intangible assets not subject to amortization consists of a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the intangible asset exceeds its fair value, the excess is recognized as an impairment loss.

Since our adoption of ASC 350 in 2002, we have not recorded any impairments as a result of our impairment testing. We monitor the reporting unit for impairment throughout each of the reporting periods. We completed our most recent impairment test as of October 1, 2018, which reflected no impairment of our franchise rights, goodwill or other intangible assets. For the years ended December 31, 2018 and 2017, respectively, no impairments were recorded.

We could record impairments in the future if there are changes in the long-term fundamentals of our business, in general market conditions or in the regulatory landscape that could prevent us from recovering the carrying value of our long-lived intangible assets. The economic conditions affecting the U.S. economy, and how that may impact the fundamentals of our business, may have a negative impact on the fair values of the assets in our reporting unit.

We have evaluated whether there are any adverse qualitative factors surrounding our Mediacom Broadband reporting unit indicating that a goodwill impairment may exist as of December 31, 2018. We do not believe that it is “more likely than not” that a goodwill impairment exists. As such, we have not performed Step 2 of the goodwill impairment test.

The following table details changes in the carrying value of goodwill for the years ended December 31, 2018 and 2017 (dollars in thousands):


Balance - December 31, 2016	$	195,945
Acquisitions		—
Dispositions		—

Balance - December 31, 2017	$	195,945
Acquisitions		—
Dispositions		(90	)

Balance - December 31, 2018	$	195,855

Segment Reporting

ASC 280 — Segment Reporting (“ASC 280”) requires the disclosure of factors used to identify an enterprise’s reportable segments. Our operations are organized and managed on the basis of cable system clusters within our service area. Each cable system cluster derives revenues from the delivery of similar products and services to a customer base that is also similar. Each cable system cluster deploys similar technology to deliver our products and services, operates within a similar regulatory environment and has similar economic characteristics. We evaluated the criteria for aggregation under ASC 280 and believe that we meet each of the respective criteria set forth and accordingly, have identified broadband services as our one reportable segment.

Accounting for Derivative Instruments

We account for derivative instruments in accordance with ASC 815 — Derivatives and Hedging. These pronouncements require that all derivative instruments be recognized on the balance sheet at fair value. We enter into interest rate exchange agreements to fix the interest rate on a portion of our variable interest rate debt to reduce the potential volatility in our interest expense that would otherwise result from changes in market interest rates. Our derivative instruments are recorded at fair value and are included in other current assets, other assets and other liabilities of our consolidated balance sheet. Our accounting policies for these instruments are based on whether they meet our criteria for designation as hedging transactions, which include the instrument’s effectiveness, risk reduction and, in most cases, a one-to-one matching of the derivative instrument to our underlying transaction. Gains and losses from changes in fair values of derivatives that are not designated as hedges for accounting purposes are recognized in the consolidated statement of operations. We have no derivative financial instruments designated as hedges. Therefore, changes in fair value for the respective periods were recognized in the consolidated statement of operations.

Accounting for Asset Retirement Obligations

We adopted ASC 410 — Asset Retirement Obligations (“ASC 410”), on January 1, 2003. ASC 410 addresses financial accounting and reporting for obligations associated with the retirement of tangible long-lived assets and the associated asset retirement costs. We reviewed our asset retirement obligations to determine the fair value of such liabilities and if a reasonable estimate of fair value could be made. This entailed the review of leases covering tangible long-lived assets as well as our rights-of-way under franchise agreements. Certain of our franchise agreements and leases contain provisions that require restoration or removal of equipment if the franchises or leases are not renewed. Based on historical experience, we expect to renew our franchise or lease agreements. In the unlikely event that any franchise or lease agreement is not expected to be renewed, we would record an estimated liability. However, in determining the fair value of our asset retirement obligation under our franchise agreements, consideration will be given to the Cable Communications Policy Act of 1984, which generally entitles the cable operator to the “fair market value” for the cable system covered by a franchise, if renewal is denied and the franchising authority acquires ownership of the cable system or effects a transfer of the cable system to another person. Changes in these assumptions based on future information could result in adjustments to estimated liabilities.

Upon adoption of ASC 410, we determined that in certain instances, we are obligated by contractual terms or regulatory requirements to remove facilities or perform other remediation activities upon the retirement of our assets. We initially recorded a $1.8 million asset in property, plant and equipment and a corresponding liability of $1.8 million. As of both December 31, 2018 and 2017, the corresponding asset, net of accumulated amortization, was $0. See Note 3.

Accounting for Long-Lived Assets

In accordance with ASC 360 — Property, Plant and Equipment, we periodically evaluate the recoverability and estimated lives of our long-lived assets, including property and equipment and intangible assets subject to amortization, whenever events or changes in circumstances indicate that the carrying amount may not be recoverable or the useful life has changed. The measurement for such impairment loss is based on the fair value of the asset, typically based upon the future cash flows discounted at a rate commensurate with the risk involved. Unless presented separately, the loss is included as a component of either depreciation expense or amortization expense, as appropriate.

Programming Costs

We have various fixed-term carriage contracts to obtain programming for our cable systems from content suppliers whose compensation is generally based on a fixed monthly fee per video customer. These programming contracts are subject to negotiated renewal. Programming costs are recognized when we distribute the related programming and are usually payable each month based on calculations performed by us and are subject to adjustments based on the results of periodic audits by the content suppliers. Historically, such audit adjustments have been immaterial to our total programming costs. Financial incentives, when received, are deferred within non-current liabilities in our consolidated balance sheets and recognized as a reduction of programming costs (which are a component of service costs in the consolidated statement of operations) over the carriage term of the programming contract.

Recent Accounting Pronouncements

Accounting Pronouncements Adopted January 1, 2018

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09 (“ASU 2014-09”) – Revenue from Contracts with Customers. The new guidance has impacted the timing of the recognition of installation revenue as well as installation costs and commission expenses. Under the new guidance, these amounts have been recognized as revenue and expenses over a period of time instead of immediately, as was being done under prior practice. We adopted ASU 2014-09 as of January 1, 2018, using the modified retrospective method of adoption, with cumulative-effect adjustments consisting of: a decrease of $32.8 million to accounts receivable, an increase to prepaid expenses and other current assets of $7.2 million, an increase in other assets of $7.3 million, a decrease of accounts payable, accrued expenses and other current liabilities of $6.5 million, a decrease to deferred revenue–current of $18.5 million, an increase to deferred revenue – non-current of $8.0 million and a decrease to total shareholders’ equity of $1.3 million. Previously reported amounts were not restated as a result of this adoption method. Operating results for the year ended December 31, 2018 are not materially different than results that would have been reported under guidance in effect before application of ASU 2014-09. See Note 12.

In January 2016, the FASB issued ASU 2016-01 – Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). The amendments in ASU 2016-01 supersede the guidance to classify equity securities with readily determinable fair values into different categories (that is, trading or available-for-sale) and require equity securities (including other ownership interests, such as partnerships, unincorporated joint ventures, and limited liability companies) to be measured at fair value with changes in the fair value recognized through net income. An entity’s equity investments that are accounted for under the equity method of accounting or result in consolidation of an investee are not included within the scope of ASU 2016-01. The amendments allow equity investments that do not have readily determinable fair values to be re-measured at fair value either upon the occurrence of an observable price change or upon identification of an impairment. The amendments also require enhanced disclosures about those investments. We adopted ASU 2016-01 on January 1, 2018. ASU 2016-01 did not have a significant impact on our financial position, operations and cash flows upon adoption.

In August 2016, the FASB issued ASU 2016-15 – Statement of Cash Flows – Clarification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). Stakeholders indicated that there is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230, Statement of Cash Flows, and other topics. ASU 2016-15 addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. We adopted ASU 2016-15 as of January 1, 2018. ASU 2016-15 did not have a material impact on our financial position, operations or cash flows upon adoption.

Accounting Pronouncements with Future Adoption Dates

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (“ASU 2016-02”), which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The objective of ASU 2016-02 is to address the concerns to increase the transparency around lease obligations. To address these concerns, previously unrecorded off-balance sheet obligations will now be brought more prominently to light by presenting lease liabilities on the face of the balance sheet. Accompanied by enhanced qualitative and quantitative disclosures in the notes to the financial statements, financial statement users will be able to more accurately compare information from one company to another. The new standard establishes a right-of-use model (“ROU”) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement.

We expect to adopt the new standard on its effective date, January 1, 2019. A modified retrospective transition approach is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available.

While we are completing our assessment of the effect of adoption, we currently believe the most significant changes relate to: the recognition of new ROU assets and lease liabilities on our balance sheet for office equipment, real estate, and other assets as determined; and to a much lesser extent, (i) the de-recognition of existing assets and liabilities for certain sale-leaseback transactions (including those arising from build-to-suit lease arrangements for which construction is complete and we are leasing the constructed asset) that currently do not qualify for sale accounting; and also, to a lesser extent, (ii) the de-recognition of existing assets and liabilities for certain assets under construction in build-to-suit lease arrangements that we will lease when construction is complete. We do not expect a significant change in our leasing activity between now and the time of adoption. We expect to elect many of the standard’s available practical expedients on adoption. Consequently, at adoption, we expect to:

•

Recognize additional operating liabilities with corresponding ROU assets of the same amount based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases.

•

To a lesser extent, de-recognize existing debt obligations and existing fixed assets for sale-leaseback transactions that currently do not qualify for sale accounting (where applicable). Any gains or losses associated with this change in accounting will be recognized through opening retained earnings on adoption, and we will recognize new ROU assets and lease liabilities on our balance sheet for the associated leases.

•

Also, to a lesser extent, de-recognize existing build-to-suit assets and liabilities at the later of the beginning of the earliest comparative period presented in the financial statements and the date that the lessee is determined to be the accounting owner of the asset in accordance with current lease guidance (where applicable). Any difference should be recorded as an adjustment to equity at that date.

We continue to finalize our assessment of all of the potential impacts that the adoption of ASU 2016-02 will have on our consolidated financial statements, including the determination of the assets within the scope of the guidance, the implementation of new accounting systems and the development of new accounting policies, procedures and internal controls associated with the adoption of the standard.

We have not finalized the impact that the adoption will have on our financial statements in the first quarter of 2019. We expect that the balance sheet impact of the adoption will be material to our financial position. We do not expect that the income statement impact of the adoption will be material to our statement of operations. We expect to avail ourselves of all of the practical expedients afforded under ASU 2016-02 and related guidance, except for the practical expedient of “Hindsight”. The practical expedients we are electing include: “the package” of practical expedients, comparative period, land easements, lessors ability to combine lease and non-lease components and short-term leases. See Note 11 for a summary of our undiscounted minimum rental commitments under operating leases as of December 31, 2018.

In June 2016, the FASB issued Accounting Standards Update 2016-13 – Financial Instruments — Credit Losses (Topic 326) (“ASU 2016-13”). The main objective of ASU 2016-13 is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments. ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. ASU 2016-13 affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income including loans, debt securities, trade receivables, net investments in leases, and any other financial assets not excluded from the scope that have the contractual right to receive cash. ASU 2016-13 is effective for public business entities for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We have not determined the impact that ASU 2016-13 will have on our financial position, operations or cash flows.

In January 2017, the FASB issued ASU 2017-04 – Intangibles – Goodwill and Other – (“ASU 2017-04”). ASU 2017-04 simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. A public business entity that is a SEC filer should adopt the amendments in this update for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. We do not expect ASU 2017-04 will have a material impact on our financial position, operations or cash flows upon adoption.

In January 2018, the FASB issued ASU 2018-01 – Leases — Land Easement Practical Expedient for Transition to Topic 842 (“ASU 2018-01”). The amendments in ASU 2018-01 permit an entity to elect an optional transition practical expedient to not evaluate under Accounting Standards Codification No. 842 – Leases (“ASC 842”) all land easements that exist or expired before the entity’s adoption of ASC 842 and that were not previously accounted for as leases under current GAAP. Once an entity adopts ASC 842, it should be applied prospectively to all new (or modified) land easements to determine whether the arrangement should be accounted for as a lease. An entity that does not elect this practical expedient should evaluate all existing or expired land easements in connection with the adoption of the new lease requirements in ASC 842 to assess whether they meet the definition of a lease. The amendments in ASU 2018-01 affect the amendments in ASU 2016-02, which are not yet effective. The effective date and transition requirements for the amendments are the same as the effective date and transition requirements in ASU 2016-02. We continue to assess ASU 2018-01 in conjunction with our adoption of ASU 2016-02, as noted above, but we expect to elect the practical expedient afforded by ASU 2018-01.

In July 2018, the FASB issued ASU 2018-11- Leases (Topic 842) – Targeted Improvements (“ASU 2018-11”). ASU 2018-11 provides specific financial reporting relief to the previously-issued ASU 2016-02 (above) and related guidance. ASU 2018-11 provides transition relief on comparative reporting at adoption which affects all entities with lease contracts that choose the additional transition method. In addition, ASU 2018-11 provides relief related to the requirements for separating components of a contract and benefits only lessors whose lease contracts qualify for the practical expedient. We believe that both items of relief in ASU 2018-11 will apply to the Company and we expect to avail ourselves of these relief provisions. The amendments in ASU 2018-11 are effective for public business entities as of January 1, 2019. We expect that ASU 2018-11 will provide efficiencies with the Company’s transition efforts at adoption.

In August 2018, the FASB issued ASU 2018-15 — Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract (“ASU 2018-15”). The amendments in ASU 2018-15 align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in ASU 2018-15. We are still evaluating the impact of ASU 2018-15. The amendments in ASU 2018-15 are effective for us for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments is permitted, including adoption in any interim period, for all entities. ASU 2018-15 can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption.

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3. PROPERTY, PLANT AND EQUIPMENT

As of December 31, 2018 and 2017, property, plant and equipment consisted of (dollars in thousands):


	December 31,			December 31,
	2018			2017
Cable systems, equipment and customer devices	$	2,467,534		$	2,362,459
Vehicles		49,784			46,696
Buildings and leasehold improvements		38,366			37,810
Furniture, fixtures and office equipment		17,919			34,207
Land and land improvements		7,785			7,785

Property, plant and equipment, gross	$	2,581,388		$	2,488,957
Accumulated depreciation		(1,730,750	)		(1,663,609	)

Property, plant and equipment, net	$	850,638		$	825,348

Depreciation expense related to fixed assets for the years ended December 31, 2018, 2017 and 2016 was $152.5 million, $172.2 million and $147.0 million, respectively. As of both December 31, 2018 and 2017, we had no property under capitalized leases. We incurred gross interest costs of $59.5 million, $72.3 million and $80.9 million for the years ended December 31, 2018, 2017 and 2016, respectively, of which $0.8 million, $1.2 million and $1.3 million was capitalized during the years ended December 31, 2018, 2017 and 2016, respectively. See Note 2.

Fair Value

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value

4. FAIR VALUE

The tables below set forth our financial assets and liabilities measured at fair value on a recurring basis using a market-based approach. Our financial assets and liabilities, all of which represent interest rate exchange agreements (which we refer to as “interest rate swaps”) have been categorized according to the three-level fair value hierarchy established by ASC 820 – Fair Value Measurement (“ASC 820”), which prioritizes the inputs used in measuring fair value, as follows (dollars in thousands):

•

Level 1 — Quoted market prices in active markets for identical assets or liabilities.

•

Level 2 — Observable market based inputs or unobservable inputs that are corroborated by market data.

•

Level 3 — Unobservable inputs that are not corroborated by market data.


	Fair Value as of December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	—	$	—	$	—

	Fair Value as of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	2,154	$	—	$	2,154

Liabilities
Interest rate exchange agreements	$	—	$	—	$	—	$	—

The fair value of our interest rate swaps represents the estimated amount that we would receive or pay to terminate such agreements, taking into account projected interest rates, based on quoted London Interbank Offered Rate (“LIBOR”) futures and the remaining time to maturity. While our interest rate swaps are subject to contractual terms that provide for the net settlement of transactions with counterparties, we do not offset assets and liabilities under these agreements for financial statement presentation purposes, and assets and liabilities are reported on a gross basis.

As of December 31, 2018, we had no interest rate swaps.

As of December 31, 2017, we recorded a current asset of $2.2 million and no current liability, long-term asset or long-term liability.

As a result of the changes in the mark-to-market valuations on our interest rate swaps, we recorded a net loss on derivatives of $2.2 million for the year end December 31, 2018 and net gains on derivatives of $2.8 million and $1.2 million for the years ended December 31, 2017 and 2016, respectively.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Accounts Payable, Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Accounts Payable, Accrued Expenses and Other Current Liabilities

5. ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accounts payable, accrued expenses and other current liabilities consisted of the following as of December 31, 2018 and 2017 (dollars in thousands):


	December 31,		December 31,
	2018		2017
Accrued programming costs	$	33,335	$	28,840
Accounts payable - trade		32,237		39,415
Accrued taxes and fees		17,761		16,221
Accrued payroll and benefits		15,412		13,102
Accrued property, plant and equipment		10,132		6,775
Advance customer payments		8,689		13,817
Bank overdrafts ⁽¹⁾		8,067		3,020
Accrued service costs		5,624		6,171
Accrued administrative expenses		5,568		4,355
Accrued marketing expenses		3,694		3,528
Accrued interest		2,809		7,422
Accrued telecommunications costs		1,036		816
Other accrued expenses		1,716		4,257

Accounts payable, accrued expenses and other current liabilities	$	146,080	$	147,739

⁽¹⁾	Bank overdrafts represented outstanding checks in excess of funds on deposit at our disbursement accounts.

We transfer funds from our depository accounts to our disbursement accounts upon daily notification of checks presented for payment. Changes in bank overdrafts are reported in “other financing activities” in our Consolidated Statement of Cash Flows.

Debt

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Debt

6. DEBT

As of December 31, 2018 and 2017, our outstanding debt consisted of (dollars in thousands):


	December 31,		December 31,
	2018		2017
Bank credit facility	$	1,024,375	$	1,077,000
5¹⁄₂% senior notes due 2021		200,000		200,000
6³⁄₈% senior notes due 2023		—		300,000

Total debt	$	1,224,375	$	1,577,000
Less: current portion		20,500		20,500

Total long-term debt, gross (less current portion)	$	1,203,875	$	1,556,500
Less: deferred financing costs, net		13,318		19,420

Total long-term debt, net (less current portion)	$	1,190,557	$	1,537,080

Bank Credit Facility

As of December 31, 2018, we maintained a $1.399 billion bank credit facility (the “credit facility”), comprising:

•

$375.0 million of revolving credit commitments, which expire on November 2, 2022;

•

$234.4 million of outstanding borrowings under Term Loan A-1, which mature on November 2, 2022; and

•

$790.0 million of outstanding borrowings under Term Loan M, which mature on January 15, 2025.

The credit facility is collateralized by our ownership interests in our operating subsidiaries and is guaranteed by us on a limited recourse basis to the extent of such ownership interests. As of December 31, 2018, the credit agreement governing the credit facility (the “credit agreement”) required our operating subsidiaries to maintain a total leverage ratio (as defined in the credit agreement) of no more than 5.0 to 1.0 and an interest coverage ratio (as defined in the credit agreement) of no less than 2.0 to 1.0. For all periods through December 31, 2018, our operating subsidiaries were in compliance with all covenants under the credit agreement. As of the same date, the credit agreement allowed for the full or partial repayment of any outstanding debt under the credit facility at par value any time prior to maturity.

Revolving Credit Commitments

On November 2, 2017, we terminated our existing revolving credit commitments and, on the same date, entered into a new credit agreement that, among other things, provided for $375.0 million of new revolving credit commitments (the “revolver”), which are scheduled to expire on November 2, 2022.

Borrowings under the revolver bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin ranging from 1.75% to 2.75%, or the Prime Rate plus a margin ranging from 0.75% to 1.75%. Commitment fees on the unused portion of the revolver are payable at a rate ranging from 0.25% to 0.50%. The applicable margin and commitment fees charged are determined by certain financial ratios pursuant to the credit agreement. The revolver expires on the earliest of (i) November 2, 2022; (ii) 91 days prior to the final maturity of any term loan under the credit facility if $200.0 million or more remains under such term loan on that date; or (iii) six months prior to the scheduled maturity of any affiliated subordinated indebtedness that is then outstanding.

As of December 31, 2018, we had $365.4 million of unused revolving credit commitments, all of which were available to be borrowed and used for general corporate purposes, after giving effect to no outstanding loans and $9.6 million of letters of credit issued to various parties as collateral.

Term Loan A-1

On November 2, 2017, we entered into a new credit agreement that provided for a new term loan in the original principal amount of $250.0 million (“Term Loan A-1”). Term Loan A-1 matures on November 2, 2022 and, since December 31, 2017, has been subject to quarterly principal payments of $3.1 million, representing 1.25% of the original principal amount, with a final payment at maturity of $187.5 million, representing 75.00% of the original principal amount.

Borrowings under Term Loan A-1 bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin ranging from 1.75% to 2.75%, or the Prime Rate plus a margin ranging from 0.75% to 1.75%, with the applicable margin charged determined by certain financial ratios pursuant to the credit agreement.

Term Loan M

On November 2, 2017, we entered into a new credit agreement that provided for a new term loan in the original principal amount of $800.0 million (“Term Loan M”). Term Loan M matures on January 15, 2025 and, since December 31, 2017, has been subject to quarterly principal payments of $2.0 million, representing 0.25% of the original principal amount, with a final payment at maturity of $742.0 million, representing 92.75% of the original principal amount.

Borrowings under Term Loan M bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.00%, subject to a minimum LIBOR of 0.75%, or the Prime Rate plus a margin of 1.00%, subject to a minimum Prime Rate of 1.75%.

Interest Rate Swaps

We periodically enter into interest rate exchange agreements (which we refer to as “interest rate swaps”) with various banks to fix the variable rate on a portion of our borrowings under the credit facility to reduce the potential volatility in our interest expense that may result from changes in market interest rates. Our interest rate swaps have not been designated as hedges for accounting purposes and have been accounted for on a mark-to-market basis as of, and for the years ended, December 31, 2018, 2017 and 2016. As of December 31, 2018, we had no current or forward-starting interest rate swaps.

Senior Notes

As of December 31, 2018, we had $200.0 million of outstanding senior notes, all of which comprised our 5¹⁄₂% senior notes due April 2021 (the “5¹⁄₂% Notes”).

Our senior notes are unsecured obligations and, as of December 31, 2018, the indenture governing our senior notes (the “indenture”) limits the incurrence of additional indebtedness based upon a maximum debt to operating cash flow ratio (as defined in the indenture) of 8.5 to 1.0. For all periods through December 31, 2018, we were in compliance with all of the covenants under the indenture.

5¹⁄₂% Notes

On March 17, 2014, we issued the 5¹⁄₂% Notes in the aggregate principal amount of $200.0 million. Net proceeds from the 5¹⁄₂% Notes funded a partial repayment of certain previously existing term loans.

As a percentage of par value, the 5¹⁄₂% Notes are currently redeemable at 101.375% and at par value commencing April 15, 2019.

6³⁄₈% Notes

On March 2, 2018, we called for the redemption of the $300.0 million principal amount outstanding of the 6³⁄₈% senior notes due 2023 (the “6³⁄₈% Notes”). On April 2, 2018, the 6³⁄₈% Notes were redeemed at a price equal to $1,031.88 for each $1,000 principal amount outstanding, for an aggregate redemption price of approximately $309.6 million, which was funded by $158.0 million of cash contributions from our parent MCC (see Note 8), which in turn had received such contributions from Mediacom LLC on March 30, 2018, and $151.6 million of borrowings under our revolving credit commitments. As a result of the redemption of the 6⅜% Notes, we recorded a loss on early extinguishment of debt of $12.2 million for the year ended December 31, 2018, which represented the $9.6 million redemption price paid above par and the write-off of $2.6 million of unamortized financing costs.

Debt Ratings

MCC’s corporate credit ratings currently are Ba1 by Moody’s, with a stable outlook, and BB by Standard and Poor’s (“S&P”), with a positive outlook, and our senior unsecured ratings currently are Ba2 by Moody’s, with a stable outlook, and B+ by S&P, with a positive outlook. There are no covenants, events of default, borrowing conditions or other terms in the credit agreement or indenture that are based on changes in our credit rating assigned by any rating agency.

Fair Value and Debt Maturities

The fair values of our senior notes and outstanding debt under the credit facility (which were calculated based upon market prices of such issuances in an active market when available) were as follows as of December 31, 2018 and 2017 (dollars in thousands):


	December 31,
	2018		2017
5¹⁄₂% senior notes due 2021	$	200,500	$	203,750
6³⁄₈% senior notes due 2023		—		312,000

Total senior notes	$	200,500	$	515,750

Bank credit facility	$	992,775	$	1,078,995

The scheduled maturities of our outstanding debt as of December 31, 2018 was as follows (dollars in thousands):


	Bank Credit Facility				Senior
	Revolving Credit		Term Loans		Notes		Total
January 1, 2019 to December 31, 2019	$	—	$	20,500	$	—	$	20,500
January 1, 2020 to December 31, 2020		—		20,500		—		20,500
January 1, 2021 to December 31, 2021		—		20,500		200,000		220,500
January 1, 2022 to December 31, 2022		—		204,875		—		204,875
January 1, 2023 to December 31, 2023		—		8,000		—		8,000
Thereafter		—		750,000		—		750,000

Total	$	—	$	1,024,375	$	200,000	$	1,224,375

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	9. RELATED PARTY TRANSACTIONS Management Agreements MCC manages us pursuant to management agreements with our operating subsidiaries. Under such agreements, MCC has full and exclusive authority to manage our day to day operations and conduct our business. We remain responsible for all expenses and liabilities relating to the construction, development, operation, maintenance, repair, and ownership of our systems. As compensation for the performance of its services, subject to certain restrictions, MCC is entitled under each management agreement to receive management fees in an amount not to exceed 4.0% of the annual gross operating revenues of our operating subsidiaries. MCC is also entitled to the reimbursement of all expenses necessarily incurred in its capacity as manager. MCC charged us management fees of $24.0 million, $21.7 million and $20.8 million during the years ended December 31, 2018, 2017 and 2016, respectively. Mediacom LLC is a preferred equity investor in us. See Note 7.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

11. COMMITMENTS AND CONTINGENCIES

Leases

Under various lease and rental agreements for offices, warehouses and computer terminals, we had rental expense of $4.0 million, $3.8 million and $4.1 million for the years ended December 31, 2018, 2017 and 2016, respectively. Future minimum annual rental payments as of December 31, 2018 were as follows (dollars in thousands):


January 1, 2019 to December 31, 2019	$	2,289
January 1, 2020 to December 31, 2020		1,831
January 1, 2021 to December 31, 2021		1,683
January 1, 2022 to December 31, 2022		1,454
January 1, 2023 to December 31, 2023		985
Thereafter		2,398

Total	$	10,640

Other Obligations

We rent utility poles for our operations generally under short-term arrangements, but we expect these arrangements to recur. Total rental expense for utility poles was approximately $5.0 million, $4.8 million and $4.2 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Letters of Credit

As of December 31, 2018, $9.6 million of letters of credit were issued to various parties to secure our performance relating to insurance and franchise requirements. The fair value of such letters of credit was approximately book value.

Legal Proceedings

We are involved in various legal actions arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on our consolidated financial position, results of operations, cash flows or business.

Revenue Recognition

12 Months Ended

Dec. 31, 2018

Text Block [Abstract]

Revenue Recognition

12. REVENUE RECOGNITION

We adopted the new accounting guidance for revenue recognition (i.e. ASU 2014-09) as of January 1, 2018. See Note 2.

We disaggregate revenue from contracts with customers by type of services. We have determined that disaggregating revenue into these categories depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors in our one reporting segment.

Nature of Services

Our primary revenue stream is subscription-based and consists of video service, high-speed data service and phone service. These services have base-level offerings and can be upgraded to premium level services. Residential customers can cancel their services at any time with no penalty. Small-to-medium business customers and large enterprise-class customers (collectively, “business customers”) are generally subject to fixed-term contracts with penalties imposed for early cancellation. We recognize revenue as services are provided on a monthly basis in an amount that reflects the consideration to which we expect to be entitled in exchange for those services. Billing for all services (regardless of customer type) typically occurs in advance of services being delivered and paid by customers on a monthly basis.

We also generate revenue from installation services and customer premise equipment rental associated with our subscription-based services. After installation occurs, equipment is rented to the customer over the service period to allow the customer to use the various subscription services noted above. Fees for installation services are viewed as advance payments for future services and are recognized over the period of benefit which is estimated to be the life of the customer relationship (approximately three years for residential customers based upon our portfolio approach and 1-10 years for all other customers). Customer premise equipment rentals are not separate performance obligations as they are considered to be highly interdependent on the underlying video, high-speed data and/or telephone service. Revenue for equipment rental is recognized when control of the underlying services is transferred to our customers over time.

One of our other revenue streams is advertising sales. These revenues represent the insertion of commercials into various video and/or Internet platforms for an advertising customer. The performance obligation for these contracts is satisfied as the commercials are displayed. There are no agent relationships included in our delivery of our advertising services. Our obligation for returns and/or refunds is deemed insignificant. Revenue is recognized at a point in time as commercials are displayed by us and viewed by the public. Advertising is billed in arrears in the month that the commercials are displayed.

A significant portion of our revenue streams are derived from customers who may cancel their subscriptions at any time without penalty. As such, the amount of revenue related to unsatisfied, remaining performance obligations is not necessarily indicative of the future revenue to be recognized from our existing customer base. Revenue from customers with a contract containing a specified contract term and non-cancelable service period will be recognized over the term of such contracts, which is generally 1-10 years.

Franchise fees imposed by local governmental authorities are collected on a monthly basis from our customers and are periodically remitted to the local governmental authorities. Because franchise fees are our obligation, we present them on a gross basis within revenues with a corresponding operating expense. Franchise fees reported on a gross basis amounted to $20.2 million, $20.7 million, and $22.7 million for the years ended December 31, 2018, 2017, and 2016, respectively.

Significant Judgments

We often provide multiple services to a customer such as: subscription services, premium video and HSD upgrades, installation services and equipment rental. These services are highly integrated within our video, HSD and phone service offerings. Judgment is required to determine whether the delivery of customer premise equipment, installation services, and additional premium services are considered distinct and should be accounted for separately from subscription services. Alternatively, the determination that these offerings are not distinct would cause these offerings to be accounted for on a combined basis within our subscription services.

Allocation of the transaction price to the distinct performance obligations in bundled service subscriptions requires judgment. The transaction price for bundled residential services is often discounted. This results in a combined, bundled price that is less than the sum of each of the individual standalone selling prices for each service. We allocate discounts for bundled residential services among each of the services to which the discount relates based on the relative standalone selling prices of those services. Standalone selling prices for our residential services are directly observable.

We believe that non-refundable upfront installation fees charged to customers result in a material right to renew the contract. As such, these upfront fees are not required to be paid upon subsequent renewals. These fees are deferred and recognized over the period of benefit which is estimated to be the life of the customer relationship (approximately three years for residential customers and 1-10 years for all other customers). Estimation of the deferral period requires consideration of both quantitative and qualitative factors.

Our revenues by type of service are as follows (dollars in thousands):


	Year Ended
Type of service	December 31, 2018
Video	$	422,485
Data		406,922
Phone		61,647
Business		165,665
Advertising		43,957

Total revenues	$	1,100,676

Virtually all of our revenue streams, including subscription services and equipment rental, are recognized over time. We recognize revenue at a point in time for services such as pay-per-view, video on demand, advertising and miscellaneous fees.

Contract Balances

We perform our obligations under contracts with customers by transferring services in exchange for receiving consideration from our customers. The timing of our performance often differs from the timing of the customer’s payment, which results in the recognition of a contract asset or a contract liability. We recognize a contract asset when we have the right to consideration for services transferred to a customer. Contract assets are classified as accounts receivable in our Consolidated Balance Sheets, where our right to consideration is unconditional. We recognize a contract liability for amounts paid by the customer, where we have a right to receive consideration before the transfer of services to the customer. Customers are generally billed in advance for most services we provide, resulting in a contract liability until such services are transferred to the customer. Contract liabilities are recorded as deferred revenue (current and non-current) in our Consolidated Balance Sheet.

The amount of revenue recognized during the year ended December 31, 2018 that was included in the opening contract liability balance was $22.3 million. The difference in the opening and closing balances of our receivables and contract liability primarily result from the timing difference between our performance and the customer’s payment.

There was no impairment of receivables during the year ended December 31, 2018.

Contract Costs

We capitalize amounts paid to obtain and fulfill a contract with a customer (e.g. sales commissions and installation activities on new contracts). We incur sales commissions in our effort to obtain customer contracts. These commissions are paid as an incentive to our employees, who are performing in a sales function, which is directly related to the contract obtained. We expense commissions for our advertising customers as incurred, as we have elected the practical expedient for items with a period of benefit of less than one year. Additionally, we incur costs to fulfill a contract through installation activities performed by its technicians. These costs include allocations of the amounts incurred for all activities associated with the installation services which are performed at a customer’s premises, such as technician’s wages and benefits, fuel costs, and vehicle maintenance.

As of December 31, 2018, the balance recognized from the costs incurred to obtain or fulfill a contract with a customer was $14.7 million of which approximately $7.2 million was short-term (recorded in prepaid and other current assets) and $7.5 million was long-term (recorded in other assets, net).

We amortize the costs to obtain or fulfill a contract with a customer on a systematic basis, consistent with the pattern of transfer to which the services relate. For residential customers, there is no stated contract term but, in practice, is treated as a day-to-day contract that renews over time. For these residential contracts, the contract period including renewals is estimated to be our average churn rate or turnover rate, which is approximately three years. For business customers, the amortization period is the initial contract term which ranges from 1 – 10 years. The amount of amortization that we recognized in service costs for installation activities for the year ended December 31, 2018 was $1.8 million. The amount of amortization that we recognized in selling, general and administrative expenses for sales commissions for the year ended December 31, 2018 was $6.6 million.

Supplemental Disclosures of Cash Flow Information

Our customers are typically billed in advance for the services we provide on a monthly basis. Historically, we have recorded such amounts in both accounts receivable and deferred revenue at the time of billing. With our adoption of the new revenue recognition guidance as of January 1, 2018, we record billed amounts when we have established an unconditional right to receive payment from our customers for services to be delivered or delivered to date under the customer’s contract. Since we adopted this new guidance using the modified retrospective method, and for more information about accounts receivable, deferred revenue and other affected accounts, please refer to the non-cash items noted in the Supplemental Disclosures of Cash Flow Information section in our Consolidated Statement of Cash Flows for the year ended December 31, 2018. Previously reported amounts were not restated as a result of this adoption method.

Sale of Assets	12 Months Ended
Sale of Assets	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Sale of Assets	13. SALE OF ASSETS *Tower Asset Sale* On November 15, 2017, MCC entered into an asset purchase agreement (the “APA”) to sell substantially all of its operating subsidiaries’ tower assets (the “tower assets”) to CTI Towers (“CTI”), subject to closing conditions and requirements per the APA. Such tower assets were non-strategic to MCC’s cable operations. On December 21, 2017, March 15, 2018 and September 25, 2018, we contributed certain tower assets to MCC which, in turn, sold such tower assets to CTI, pursuant to the terms and conditions of the APA. The contributed tower assets had a net book value of approximately $0.1 million at the time of transfer. In conjunction, with the sale, we reduced our asset retirement obligation (liability) by approximately $1.4 million. MCC received equity in CTI, representing a minority position, in exchange for the tower assets. These transactions substantially completed the tower asset sale pursuant to the terms and conditions of the APA.

Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2018

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Schedule II

MEDIACOM BROADBAND LLC AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS


	Balance at beginning of period		Additions - Charged to costs and expenses		Additions - Charged to other accounts		Deductions		Balance at end of period
December 31, 2016
Allowance for doubtful accounts:
Current receivables	$	3,627	$	5,896	$	—	$	5,666	$	3,857

December 31, 2017
Allowance for doubtful accounts:
Current receivables	$	3,857	$	3,557	$	—	$	4,050	$	3,364

December 31, 2018
Allowance for doubtful accounts:
Current receivables	$	3,364	$	3,799	$	—	$	3,610	$	3,553

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Basis of Preparation of Consolidated Financial Statements

Basis of Preparation of Consolidated Financial Statements

Reclassifications

Reclassifications

Certain reclassifications have been made to prior year amounts to conform to the current year presentation.

Revenue Recognition

Revenue Recognition

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

Concentration of Credit Risk

Concentration of Credit Risk

Property, Plant and Equipment

Property, Plant and Equipment


Buildings		10 - 40 years
Leasehold improvements		Lesser of: life of respective lease or life of asset
Cable systems, equipment and customer devices		3-20 years
Vehicles		4-5 years
Furniture, fixtures, and office equipment		5 years

Capitalized Software Costs

Capitalized Software Costs

Marketing and Promotional Costs

Marketing and Promotional Costs

Marketing and promotional costs are expensed as incurred and were $39.4 million, $38.6 million and $35.7 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Intangible Assets

Intangible Assets

The following table details changes in the carrying value of goodwill for the years ended December 31, 2018 and 2017 (dollars in thousands):


Balance - December 31, 2016	$	195,945
Acquisitions		—
Dispositions		—

Balance - December 31, 2017	$	195,945
Acquisitions		—
Dispositions		(90	)

Balance - December 31, 2018	$	195,855

Segment Reporting

Segment Reporting

Accounting for Derivative Instruments

Accounting for Derivative Instruments

Accounting for Asset Retirement Obligations

Accounting for Asset Retirement Obligations

Accounting for Long-Lived Assets

Accounting for Long-Lived Assets

Programming Costs

Programming Costs

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Accounting Pronouncements Adopted January 1, 2018

Accounting Pronouncements with Future Adoption Dates

•

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary of Estimated Useful Lives

Depreciation is calculated on a straight-line basis over the following useful lives:


Buildings		10 - 40 years
Leasehold improvements		Lesser of: life of respective lease or life of asset
Cable systems, equipment and customer devices		3-20 years
Vehicles		4-5 years
Furniture, fixtures, and office equipment		5 years

Summary of Changes in Carrying Value of Goodwill

The following table details changes in the carrying value of goodwill for the years ended December 31, 2018 and 2017 (dollars in thousands):


Balance - December 31, 2016	$	195,945
Acquisitions		—
Dispositions		—

Balance - December 31, 2017	$	195,945
Acquisitions		—
Dispositions		(90	)

Balance - December 31, 2018	$	195,855

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

As of December 31, 2018 and 2017, property, plant and equipment consisted of (dollars in thousands):


	December 31,			December 31,
	2018			2017
Cable systems, equipment and customer devices	$	2,467,534		$	2,362,459
Vehicles		49,784			46,696
Buildings and leasehold improvements		38,366			37,810
Furniture, fixtures and office equipment		17,919			34,207
Land and land improvements		7,785			7,785

Property, plant and equipment, gross	$	2,581,388		$	2,488,957
Accumulated depreciation		(1,730,750	)		(1,663,609	)

Property, plant and equipment, net	$	850,638		$	825,348

Fair Value (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value of Interest Rate Swap Assets and Liabilities


	Fair Value as of December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	—	$	—	$	—

	Fair Value as of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	2,154	$	—	$	2,154

Liabilities
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Accounts Payable, Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Summary of Accounts Payable, Accrued Expenses and Other Current Liabilities

Accounts payable, accrued expenses and other current liabilities consisted of the following as of December 31, 2018 and 2017 (dollars in thousands):


	December 31,		December 31,
	2018		2017
Accrued programming costs	$	33,335	$	28,840
Accounts payable - trade		32,237		39,415
Accrued taxes and fees		17,761		16,221
Accrued payroll and benefits		15,412		13,102
Accrued property, plant and equipment		10,132		6,775
Advance customer payments		8,689		13,817
Bank overdrafts ⁽¹⁾		8,067		3,020
Accrued service costs		5,624		6,171
Accrued administrative expenses		5,568		4,355
Accrued marketing expenses		3,694		3,528
Accrued interest		2,809		7,422
Accrued telecommunications costs		1,036		816
Other accrued expenses		1,716		4,257

Accounts payable, accrued expenses and other current liabilities	$	146,080	$	147,739

⁽¹⁾	Bank overdrafts represented outstanding checks in excess of funds on deposit at our disbursement accounts.

Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Summary of Outstanding Debt

As of December 31, 2018 and 2017, our outstanding debt consisted of (dollars in thousands):


	December 31,		December 31,
	2018		2017
Bank credit facility	$	1,024,375	$	1,077,000
5¹⁄₂% senior notes due 2021		200,000		200,000
6³⁄₈% senior notes due 2023		—		300,000

Total debt	$	1,224,375	$	1,577,000
Less: current portion		20,500		20,500

Total long-term debt, gross (less current portion)	$	1,203,875	$	1,556,500
Less: deferred financing costs, net		13,318		19,420

Total long-term debt, net (less current portion)	$	1,190,557	$	1,537,080

Fair Values of Senior Notes and Outstanding Debt under Credit Facility


	December 31,
	2018		2017
5¹⁄₂% senior notes due 2021	$	200,500	$	203,750
6³⁄₈% senior notes due 2023		—		312,000

Total senior notes	$	200,500	$	515,750

Bank credit facility	$	992,775	$	1,078,995

Scheduled Maturities of Our Outstanding Debt

The scheduled maturities of our outstanding debt as of December 31, 2018 was as follows (dollars in thousands):


	Bank Credit Facility				Senior
	Revolving Credit		Term Loans		Notes		Total
January 1, 2019 to December 31, 2019	$	—	$	20,500	$	—	$	20,500
January 1, 2020 to December 31, 2020		—		20,500		—		20,500
January 1, 2021 to December 31, 2021		—		20,500		200,000		220,500
January 1, 2022 to December 31, 2022		—		204,875		—		204,875
January 1, 2023 to December 31, 2023		—		8,000		—		8,000
Thereafter		—		750,000		—		750,000

Total	$	—	$	1,024,375	$	200,000	$	1,224,375

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Summary of Future Minimum Annual Rental Payments

Future minimum annual rental payments as of December 31, 2018 were as follows (dollars in thousands):


January 1, 2019 to December 31, 2019	$	2,289
January 1, 2020 to December 31, 2020		1,831
January 1, 2021 to December 31, 2021		1,683
January 1, 2022 to December 31, 2022		1,454
January 1, 2023 to December 31, 2023		985
Thereafter		2,398

Total	$	10,640

Organization - Additional Information (Detail)	Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Amount due from affiliate by subsidiary	$ 100

- Definition

Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6918054&loc=d3e56071-112765

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(3))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02(11))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-06(3)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604059-122996

+ Details

Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
	Oct. 01, 2018 USD ($)	Dec. 31, 2018 USD ($) Segment Franchise	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Percentage of gross revenue required to pay franchise fees		5.00%
Software development costs wrote off		$ 4,800,000	$ 3,300,000
Software development costs amortized		100,000	200,000	$ 2,800,000
Marketing and promotional costs expensed		$ 39,400,000	38,600,000	$ 35,700,000
Number of franchises \| Franchise		478
Impairment loss of goodwill	$ 0	$ 0	0
Impairment loss of other intangible assets	0	$ 0	0
Number of reportable segment \| Segment		1
Asset in property, plant and equipment		$ 2,331,732,000	2,316,683,000
Liability in property, plant and equipment		1,407,823,000	1,768,855,000
Property, Plant and Equipment, Other Types [Member]
Finite-Lived Intangible Assets [Line Items]
Asset in property, plant and equipment		1,800,000
Liability in property, plant and equipment		1,800,000
Accumulated depreciation		$ 0	0
Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Other finite-lived intangible assets useful lives		5 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Net book value of capitalized software		$ 100,000	100,000
Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment loss of franchise rights	$ 0	$ 0	$ 0

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2018
Buildings [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Buildings [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements	Lesser of life of respective lease or life of asset
Cable Systems, Equipment and Customer Devices [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Cable Systems, Equipment and Customer Devices [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	20 years
Vehicles [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	4 years
Vehicles [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years

Summary of Significant Accounting Policies - Summary of Changes in Carrying Value of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill Roll Forward
Beginning Balance	$ 195,945	$ 195,945
Acquisitions	0	0
Dispositions	(90)
Ending Balance	$ 195,855	$ 195,945

Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Decrease to accounts receivable		$ 40,252	$ 71,994
Increase to prepaid expenses and other current assets		24,347	22,881
Increase in other assets		14,312	11,001
Decrease to deferred revenue - current		22,345	41,382
Increase to deferred revenue - non-current		8,237
Decrease to total shareholders' equity		$ 773,909	$ 397,828	$ 317,492	$ 95,461
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Finite-Lived Intangible Assets [Line Items]
Decrease to accounts receivable	$ 32,800
Increase to prepaid expenses and other current assets	7,200
Increase in other assets	7,300
Decrease of accounts payable, accrued expenses and other current liabilities	6,500
Decrease to deferred revenue - current	18,500
Increase to deferred revenue - non-current	8,000
Decrease to total shareholders' equity	$ 1,300

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,581,388	$ 2,488,957
Accumulated depreciation	(1,730,750)	(1,663,609)
Property, plant and equipment, net	850,638	825,348
Cable Systems, Equipment and Customer Devices [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,467,534	2,362,459
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	49,784	46,696
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	38,366	37,810
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,919	34,207
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,785	$ 7,785

Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 152,500,000	$ 172,200,000	$ 147,000,000
Property under capitalized leases	0	0
Interest costs	59,500,000	72,300,000	80,900,000
Interest costs capitalized	$ 800,000	$ 1,200,000	$ 1,300,000

Fair Value - Fair Value of Interest Rate Swap Assets and Liabilities (Detail) - Interest Rate Swap [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		$ 2,154
Liabilities	$ 0	0
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		2,154
Liabilities	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	$ 0	$ 0

Fair Value - Additional Information (Detail) - USD ($)	12 Months Ended
Fair Value - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Current liability		$ 0
Long-term liability		0
Long term assets		0
Current assets		2,200,000
Net gain (loss) on derivatives	$ (2,200,000)	$ 2,800,000	$ 1,200,000

Accounts Payable, Accrued Expenses and Other Current Liabilities - Summary of Accounts Payable, Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued programming costs	$ 33,335	$ 28,840
Accounts payable - trade	32,237	39,415
Accrued taxes and fees	17,761	16,221
Accrued payroll and benefits	15,412	13,102
Accrued property, plant and equipment	10,132	6,775
Advance customer payments	8,689	13,817
Bank overdrafts	8,067	3,020
Accrued service costs	5,624	6,171
Accrued administrative expenses	5,568	4,355
Accrued marketing expenses	3,694	3,528
Accrued interest	2,809	7,422
Accrued telecommunications costs	1,036	816
Other accrued expenses	1,716	4,257
Accounts payable, accrued expenses and other current liabilities	$ 146,080	$ 147,739

Debt - Summary of Outstanding Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 1,224,375	$ 1,577,000
Less: current portion	20,500	20,500
Total long-term debt, gross (less current portion)	1,203,875	1,556,500
Total long-term debt, gross (less current portion)	1,203,875	1,556,500
Less: deferred financing costs, net	13,318	19,420
Total long-term debt, net (less current portion)	1,190,557	1,537,080
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	1,024,375	1,077,000
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total debt	$ 200,000	200,000
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total debt		$ 300,000

Debt - Summary of Outstanding Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	5.50%
Debt instrument, Maturity	2021
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	6.375%
Debt instrument, Maturity	2023

Debt - Additional Information (Detail) - USD ($)			1 Months Ended	9 Months Ended	12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Apr. 02, 2018	Nov. 02, 2017	Nov. 02, 2017	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 30, 2018	Mar. 02, 2018	Mar. 17, 2014
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 0
Outstanding senior notes				$ 200,000,000
Capital contributions from parent					208,000,000	$ 60,000,000	$ 75,000,000
Loss on early extinguishment of debt					(12,216,000)	$ (2,623,000)	$ (1,156,000)
Unamortized financing costs					$ 9,565,000
Maximum [Member]
Debt Instrument [Line Items]
Required debt to operating cash flow					8.50%
Minimum [Member]
Debt Instrument [Line Items]
Required debt to operating cash flow					1.00%
Loans Payable [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 0
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Original principal amount										$ 200,000,000
Senior notes expiration date				2021-04
Redemption percentage of senior notes, description					As a percentage of par value, the 51/2% Notes are currently redeemable at 101.375% and at par value commencing April 15, 2019.
Debt, redemption price percentage					101.375%
Redemption of senior notes commencing date					Apr. 15, 2019
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt, redemption price percentage	1.30319%
Debt instrument, repurchased principal amount									$ 300,000,000
Debt, aggregate redemption price	$ 309,600,000
Capital contributions from parent	$ 158,000,000
Loss on early extinguishment of debt					$ (12,200,000)
Redemption price paid above par value					9,600,000
Unamortized financing costs					$ 2,600,000
Revolving Credit Commitments at Present [Member]
Debt Instrument [Line Items]
Line of credit facility, certain financial terms					The revolver expires on the earliest of (i) November 2, 2022; (ii) 91 days prior to the final maturity of any term loan under the credit facility if $200.0 million or more remains under such term loan on that date; or (iii) six months prior to the scheduled maturity of any affiliated subordinated indebtedness that is then outstanding.
Revolving Credit Commitments at Present [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Rate of commitment fees on the unused portion of revolving credit commitments			0.50%
Revolving Credit Commitments at Present [Member] \| Maximum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin			2.75%
Revolving Credit Commitments at Present [Member] \| Maximum [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin			1.75%
Revolving Credit Commitments at Present [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Rate of commitment fees on the unused portion of revolving credit commitments			0.25%
Revolving Credit Commitments at Present [Member] \| Minimum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin			1.75%
Revolving Credit Commitments at Present [Member] \| Minimum [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin			0.75%
Revolving Credit Commitments at Present [Member] \| 6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding								$ 151,600,000
Term Loan A-1 [Member]
Debt Instrument [Line Items]
Original principal amount		$ 250,000,000	$ 250,000,000
Quarterly principal payments of original principal amount		$ 3,100,000
Rate of quarterly principal payments of original principal amount		1.25%
Final payment at maturity representing the original principal amount		$ 187,500,000	187,500,000
Rate of Final payment at maturity representing the original principal amount		75.00%
Term Loan A-1 [Member] \| Maximum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin		2.75%
Term Loan A-1 [Member] \| Maximum [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin		1.75%
Term Loan A-1 [Member] \| Minimum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin		1.75%
Term Loan A-1 [Member] \| Minimum [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin		0.75%
Term Loan M [Member]
Debt Instrument [Line Items]
Original principal amount		$ 800,000,000	800,000,000
Quarterly principal payments of original principal amount		$ 2,000,000
Rate of quarterly principal payments of original principal amount		0.25%
Final payment at maturity representing the original principal amount		$ 742,000,000	742,000,000
Rate of Final payment at maturity representing the original principal amount		92.75%
Term Loan M [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin		2.00%
Term Loan M [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin		1.00%
Term Loan M [Member] \| Minimum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Floating rate margin		0.75%
Term Loan M [Member] \| Minimum [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Floating rate margin		1.75%
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Unused revolving credit commitments					$ 365,400,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					9,600,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 1,399,000,000
Bank Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio					500.00%
Bank Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest coverage ratio					200.00%
Bank Credit Facility [Member] \| Revolving Credit Commitments at Present [Member]
Debt Instrument [Line Items]
Revolving credit commitments		$ 375,000,000	$ 375,000,000		$ 375,000,000
Expiration date of revolving credit commitments					Nov. 02, 2022
Bank Credit Facility [Member] \| Term Loan A-1 [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 234,400,000
Expiration date of revolving credit commitments					Nov. 02, 2022
Bank Credit Facility [Member] \| Term Loan M [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 790,000,000
Expiration date of revolving credit commitments					Jan. 15, 2025

Debt - Fair Values of Senior Notes and Outstanding Debt under Credit Facility (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total senior notes	$ 200,500	$ 515,750
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total senior notes	200,500	203,750
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total senior notes		312,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total senior notes	$ 992,775	$ 1,078,995

Debt - Fair Values of Senior Notes and Outstanding Debt under Credit Facility (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	5.50%
Debt instrument, Maturity	2021
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	6.375%
Debt instrument, Maturity	2023

Debt - Scheduled Maturities of Our Outstanding Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
January 1, 2019 to December 31, 2019	$ 20,500
January 1, 2020 to December 31, 2020	20,500
January 1, 2021 to December 31, 2021	220,500
January 1, 2022 to December 31, 2022	204,875
January 1, 2023 to December 31, 2023	8,000
Thereafter	750,000
Total	1,224,375	$ 1,577,000
Senior Notes [Member]
Debt Instrument [Line Items]
January 1, 2021 to December 31, 2021	200,000
Total	200,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total	1,024,375	$ 1,077,000
Bank Credit Facility [Member] \| Term Loans [Member]
Debt Instrument [Line Items]
January 1, 2019 to December 31, 2019	20,500
January 1, 2020 to December 31, 2020	20,500
January 1, 2021 to December 31, 2021	20,500
January 1, 2022 to December 31, 2022	204,875
January 1, 2023 to December 31, 2023	8,000
Thereafter	750,000
Total	$ 1,024,375

Preferred Members' Interest - Additional Information (Detail) - Mediacom LLC [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 31, 2001
Class Of Stock [Line Items]
Preferred equity investment				$ 150.0
Percentage of annual cash dividend on preferred equity investment	12.00%
Cash dividends on PMI	$ 18.0	$ 18.0	$ 18.0

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Management fees charged by MCC	$ 24,000	$ 21,665	$ 20,800
MCC [Member]
Related Party Transaction [Line Items]
Management fees charged by MCC	$ 24,000	$ 21,700	$ 20,800
MCC [Member] \| Management Fees [Member] \| Operating Revenues [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Rate of annual gross operating revenues of our operating subsidiaries	4.00%

Employee Benefits Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Present matching contribution of employee	50.00%
Percentage of employee contribution	6.00%
Service Costs and Selling, General and Administrative Expenses [Member]
Defined Contribution Plan Disclosure [Line Items]
Total contribution	$ 1.3	$ 1.4	$ 1.2

Commitments and Contingencies - Summary of Future Minimum Annual Rental Payments (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
January 1, 2019 to December 31, 2019	$ 2,289
January 1, 2020 to December 31, 2020	1,831
January 1, 2021 to December 31, 2021	1,683
January 1, 2022 to December 31, 2022	1,454
January 1, 2023 to December 31, 2023	985
Thereafter	2,398
Total	$ 10,640

Revenue Recognition - Additional Information (Detail)	12 Months Ended
Revenue Recognition - Additional Information (Detail)	Dec. 31, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Disaggregation of Revenue [Line Items]
Number of reporting segments affected \| Segment	1
Franchise fees imposed by local governmental authorities	$ 456,527,000	$ 439,990,000	$ 419,406,000
Contract with Customer, Liability, Revenue Recognized	22,300,000
Costs incurred to obtain or fulfill a contract with a customer	14,700,000
Franchise [Member]
Disaggregation of Revenue [Line Items]
Franchise fees imposed by local governmental authorities	20,200,000	$ 20,700,000	$ 22,700,000
Short-term [Member]
Disaggregation of Revenue [Line Items]
Costs incurred to obtain or fulfill a contract with a customer	7,200,000
Long-term [Member]
Disaggregation of Revenue [Line Items]
Costs incurred to obtain or fulfill a contract with a customer	7,500,000
Accounts Receivable [Member]
Disaggregation of Revenue [Line Items]
Impairment of receivables	$ 0
Specified Contract Term and Non-Cancelable Service Period [Member] \| Minimum [Member]
Disaggregation of Revenue [Line Items]
Contract term	1 year
Specified Contract Term and Non-Cancelable Service Period [Member] \| Maximum [Member]
Disaggregation of Revenue [Line Items]
Contract term	10 years
Residential Contracts [Member]
Disaggregation of Revenue [Line Items]
Installation services, period of benefit	3 years
Amortization period	Three years
Other Contracts [Member] \| Minimum [Member]
Disaggregation of Revenue [Line Items]
Installation services, period of benefit	1 year
Other Contracts [Member] \| Maximum [Member]
Disaggregation of Revenue [Line Items]
Installation services, period of benefit	10 years
Commercial and Enterprise Contracts [Member] \| Minimum [Member]
Disaggregation of Revenue [Line Items]
Amortization period	1 years
Commercial and Enterprise Contracts [Member] \| Maximum [Member]
Disaggregation of Revenue [Line Items]
Amortization period	10 years
Costs to Fulfill a Contract - Installation Activities [Member]
Disaggregation of Revenue [Line Items]
Amortization recognized	$ 1,800,000
Costs to Obtain a Contract - Commissions [Member]
Disaggregation of Revenue [Line Items]
Amortization recognized	$ 6,600,000

Revenue Recognition - Summary of Disaggregation of Revenue Qualitative Reconciliation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,100,676	$ 1,059,086	$ 1,033,239
Video [Member]
Disaggregation of Revenue [Line Items]
Total revenues	422,485
Data [Member]
Disaggregation of Revenue [Line Items]
Total revenues	406,922
Phone [Member]
Disaggregation of Revenue [Line Items]
Total revenues	61,647
Business [Member]
Disaggregation of Revenue [Line Items]
Total revenues	165,665
Advertising [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 43,957

Sale of Assets - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 25, 2018	Mar. 15, 2018	Dec. 21, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net book value				$ 850,638	$ 825,348
CTI Towers [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net book value	$ 100	$ 100	$ 100
Reduction of asset retirement obligation (liability) in conjunction of sale	$ 1,400	$ 1,400	$ 1,400

Schedule II - Valuation and Qualifying Accounts (Detail) (Detail) - Current Receivables [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 3,364	$ 3,857	$ 3,627
Additions, Charged to costs and expenses	3,799	3,557	5,896
Additions - Charged to other accounts	0	0	0
Deductions, Charged to costs and expenses	3,610	4,050	5,666
Balance at end of period	$ 3,553	$ 3,364	$ 3,857

Preferred Members' Interest	12 Months Ended
Preferred Members' Interest	Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Preferred Members' Interest	7. PREFERRED MEMBERS’ INTEREST In July 2001, we received a $150.0 million preferred membership investment (“PMI”) from the operating subsidiaries of Mediacom LLC, which has a 12% annual dividend, payable quarterly in cash. We may voluntarily repay the PMI at any time at par, and the operating subsidiaries of Mediacom LLC have the option to call for the redemption of the PMI upon the repayment of all of our outstanding senior notes. We paid $18.0 million in cash dividends on the PMI during each of the years ended December 31, 2018, 2017, and 2016.

Member's Equity	12 Months Ended
Member's Equity	Dec. 31, 2018
Equity [Abstract]
Member's Equity	8. MEMBER’S EQUITY As a wholly-owned subsidiary of MCC, our business affairs, including our financing decisions, are directed by MCC. See Note 9. Capital contributions from parent and capital distributions to parent are reported on a gross basis in the Consolidated Statements of Changes in Member’s Equity and the Consolidated Statements of Cash Flows. We received capital contributions from parent in cash of $208.0 million, $60.0 million and $75.0 for the years ended December 31, 2018, 2017, and 2016, respectively. We made capital distributions to parent in cash of $10.5 million, $121.1 million, and $7.0 during the years ended December 31, 2018, 2017 and 2016, respectively.

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Benefit Plans	10. EMPLOYEE BENEFIT PLANS Substantially all our employees are eligible to participate in MCC’s defined contribution plan pursuant to the Internal Revenue Code Section 401(k) (“MCC’s Plan”). Under MCC’s Plan, eligible employees may contribute a portion of their current pretax compensation (as defined by MCC’s Plan). MCC’s Plan permits, but does not require, matching contributions and non-matching (profit sharing) contributions to be made by us up to a maximum dollar amount or maximum percentage of participant contributions, as determined annually by us. We presently match 50% on the first 6% of employee contributions. Our contributions under MCC’s Plan totaled $1.3 million, $1.4 million and $1.2 million for the years ended December 31, 2018, 2017 and 2016, respectively, which were recorded in service costs and selling, general and administrative expenses.

Hurricane Michael	12 Months Ended
Hurricane Michael	Dec. 31, 2018
Unusual or Infrequent Items, or Both [Abstract]
Hurricane Michael	14. HURRICANE MICHAEL On October 10, 2018, Hurricane Michael made landfall in the Panhandle region of Florida. Hurricane Michael caused property damage to our cable plant, as well as to our customers’ homes and businesses, in Georgia. As of December 31, 2018, the damage caused by Hurricane Michael required an additional $7.9 million of capital expenditures in order to repair our network and services.

Deferred Compensation	12 Months Ended
Deferred Compensation	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Deferred Compensation	15. DEFERRED COMPENSATION In November 2018, MCC launched the Mediacom Equity Bonus Plan (“MEBP”) designed as a deferred compensation plan for certain select employees. The MEBP has certain eligibility and vesting requirements which, along with the Company’s performance, determine the cash bonus payable under a qualified sale of the Company or other exit transaction. Participants may also receive payment prior to such qualifying event in cases of termination without cause, retirement, or disability all of which are subject to early withdrawal penalties. The plan also provides participants the ability to voluntarily receive a one-time early distribution, subject to the terms and conditions of the MEBP. For the year ended December 31, 2018, we recorded $0.8 million in selling, general and administrative expenses in the Consolidated Statement of Operations which was accrued and reported as accounts payable, accrued expenses and other current liabilities in the Consolidated Balance Sheet.

Hurricane Michael - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Unusual or Infrequent Items, or Both [Abstract]
Additions to capital expenditures	$ 7.9