Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	MCCCL
Entity Registrant Name	MEDIACOM LLC
Entity Central Index Key	0001064116
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0
Entity Public Float		$ 0

Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash	$ 8,720	$ 9,744
Accounts receivable, net of allowance for doubtful accounts of $2,135 and $2,010	45,712	53,215
Prepaid expenses and other current assets	8,142	9,485
Total current assets	62,574	72,444
Preferred membership interest in affiliated company (Note 7)	150,000	150,000
Property, plant and equipment, net of accumulated depreciation of $1,592,999 and $1,499,404	672,832	669,159
Franchise rights	614,731	614,731
Goodwill	23,911	23,911
Subscriber lists, net of accumulated amortization of $118,279 and $118,271	22	31
Other assets, net of accumulated amortization of $8,343 and $11,553	15,288	15,662
Total assets	1,539,358	1,545,938
CURRENT LIABILITIES
Accounts payable, accrued expenses and other current liabilities	130,706	149,058
Accounts payable-affiliates	1,463	9,628
Deferred revenue	28,115	27,706
Current portion of long-term debt	8,500	15,250
Total current liabilities	168,784	201,642
Long-term debt, less current portion	1,246,500	1,436,750
Other non-current liabilities	1,859	12,839
Total liabilities	1,417,143	1,651,231
Commitments and contingencies (Note 12)
MEMBER'S EQUITY (DEFICIT)
Capital contributions	473,609	321,320
Accumulated deficit	(351,394)	(426,613)
Total member's equity (deficit)	122,215	(105,293)
Total liabilities and member's equity (deficit)	$ 1,539,358	$ 1,545,938

Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,135	$ 2,010
Accumulated depreciation	1,592,999	1,499,404
Accumulated amortization on Subscriber lists	118,279	118,271
Accumulated amortization on Other assets	$ 8,343	$ 11,553

Consolidated Statements of Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Revenues	$ 711,634	$ 698,861	$ 681,683
Costs and expenses:
Service costs (exclusive of depreciation and amortization)	310,752	301,261	295,067
Selling, general and administrative expenses	121,772	119,294	114,992
Management fee expense	12,350	12,400	11,885
Depreciation and amortization	116,395	115,341	115,324
Operating income	150,365	150,565	144,415
Interest expense, net	(86,815)	(94,443)	(95,868)
Gain on derivatives, net	18,229	18,026	5,083
Loss on early extinguishment of debt (Note 6)	(23,046)		(6,468)
Gain on sale of cable systems, net			4,920
Investment income from affiliate (Note 7)	18,000	18,000	18,000
Other expense, net	(1,514)	(1,702)	(1,591)
Net income	$ 75,219	$ 90,446	$ 68,491

Consolidated Statements of Changes in Member's (Deficit) Equity (USD $) In Thousands	Total	Capital Contributions [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2011	$ (249,571)	$ 335,979	$ (585,550)
Net income	68,491		68,491
Capital distributions to parent	(121,400)	(121,400)
Capital contributions from parent	111,000	111,000
Other	(718)	(718)
Balance at Dec. 31, 2012	(192,198)	324,861	(517,059)
Net income	90,446		90,446
Capital distributions to parent	(3,800)	(3,800)
Other	259	259
Balance at Dec. 31, 2013	(105,293)	321,320	(426,613)
Net income	75,219		75,219
Capital distributions to parent	(3,500)	(3,500)
Capital contributions from parent	155,600	155,600
Other	189	189
Balance at Dec. 31, 2014	$ 122,215	$ 473,609	$ (351,394)

- 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, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 75,219	$ 90,446	$ 68,491
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	116,395	115,341	115,324
Gain on derivatives, net	(18,229)	(18,026)	(5,083)
Loss on early extinguishment of debt	7,047		6,468
Gain on sale of cable systems, net			(4,920)
Amortization of deferred financing costs	3,668	3,146	3,308
Changes in assets and liabilities:
Accounts receivable, net	7,503	(7,501)	(10,066)
Accounts receivable - affiliates			(1,603)
Prepaid expenses and other assets	1,189	(207)	(1,293)
Accounts payable, accrued expenses and other current liabilities	(11,377)	13,018	2,269
Accounts payable - affiliates	(8,165)
Deferred revenue	409	478	620
Other non-current liabilities	(344)	(420)	(641)
Net cash flows provided by operating activities	173,315	196,275	172,874
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(120,306)	(120,943)	(104,976)
Change in accrued property, plant and equipment	(337)	(842)	(3,380)
Acquisition of cable systems			(1,186)
Proceeds from sale of cable systems, net			10,678
Other, net	247
Net cash flows used in investing activities	(120,396)	(121,785)	(98,864)
CASH FLOWS FROM FINANCING ACTIVITIES:
New borrowings of bank debt	1,038,864	167,000	310,000
Repayment of bank debt	(885,864)	(237,000)	(621,000)
Issuance of senior notes			250,000
Redemption of senior notes	(350,000)
Capital distributions to parent (Note 8)	(3,500)	(3,800)	(121,400)
Capital contributions from parent (Note 8)	155,600		111,000
Financing costs	(9,878)		(5,008)
Other financing activities	835	(340)	(646)
Net cash flows used in financing activities	(53,943)	(74,140)	(77,054)
Net (decrease) increase in cash	(1,024)	350	(3,044)
CASH, beginning of year	9,744	9,394	12,438
CASH, end of year	8,720	9,744	9,394
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest, net of amounts capitalized	$ 95,521	$ 91,274	$ 85,976

Organization	12 Months Ended
Organization	Dec. 31, 2014
Accounting Policies [Abstract]
Organization	1. ORGANIZATION Mediacom LLC (“Mediacom LLC” and collectively with its subsidiaries, “we,” “our” or “us”) is a New York 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 Broadband LLC, a Delaware limited liability company wholly-owned by MCC. As limited liability companies, we and Mediacom Broadband 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 Capital Corporation (“Mediacom Capital”), a New York corporation wholly-owned by us, co-issued, jointly and severally with us, public debt securities. Mediacom Capital 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.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References+ Details

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

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 significant intercompany transactions and balances have been eliminated. 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, HSD, phone and business services revenues are recognized when the services are provided to our customers. Credit risk is managed by disconnecting services to customers who are deemed to be delinquent. Installation revenues are recognized as customer connections are completed because installation revenues are less than direct installation costs. Advertising sales are recognized in the period that the advertisements are exhibited. Deposits and up-front fees collected from customers are recognized as deferred revenue until the earnings process is complete. 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. Franchise fees reported on a gross basis amounted to approximately $12.4 million, $11.5 million and $11.6 million for the years ended December 31, 2014, 2013 and 2012, respectively. Franchise fees are reported in video revenue and included in selling, general and administrative expenses.

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		40 Years
Leasehold improvements		Life of respective lease
Cable systems and equipment and subscriber devices		5 to 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 the 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 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 the software that will be used in our telephony business. 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, 2014 and 2013, we capitalized approximately $0.1 and $0.2 million, respectively, of software development costs. Capitalized software had a net book value of $1.3 million and $2.1 million as of December 31, 2014 and 2013, respectively.

In connection with our detailed analysis of capitalized software costs in 2014, we identified an amount that required adjustment to our 2013 financial statement disclosures to properly reflect net book value of our capitalized software costs as of December 31, 2013. Accordingly, the 2013 disclosure has been revised to reflect the appropriate amount, which management believes is immaterial to prior periods, and to conform to the current year presentation. The revision decreased the net book value disclosed at December 31, 2013 by approximately $9.5 million. The revision had no impact on our previously reported net capitalized software which is reported as a component of property, plant and equipment, in our financial statements. This revision also had no impact on accumulated depreciation, results of operations or cash flows.

Marketing and Promotional Costs

Marketing and promotional costs are expensed as incurred and were $16.2 million, $15.2 million and $14.6 million for the years ended December 31, 2014, 2013 and 2012, 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, 2014, we held 853 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 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 LLC. Comprising cable system clusters across several states, Mediacom LLC 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 completed our most recent impairment test as of October 1, 2014, which reflected no impairment of our franchise rights, goodwill or other intangible assets.

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.

In accordance with Accounting Standards Update No. 2010-28 — When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (a consensus of the FASB Emerging Issues Task Force), as of October 1, 2014, we have evaluated whether there are any adverse qualitative factors surrounding our Mediacom LLC reporting unit indicating that a goodwill impairment may exist. 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. As of December 31, 2014, the Mediacom LLC reporting unit had a positive carrying amount, and as of December 31, 2014, the Mediacom LLC reporting unit had a negative carrying amount.

The following table details changes in the carrying value of goodwill for the years ended December 31, 2014 and 2013, respectively, (dollars in thousands):


Balance - December 31, 2012	$	23,911
Acquisitions		—
Dispositions		—

Balance - December 31, 2013	$	23,911

Acquisitions		—
Dispositions		—

Balance - December 31, 2014	$	23,911

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. Management evaluated the criteria for aggregation under ASC 280 and believes that we meet each of the respective criteria set forth. Accordingly, management has 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

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 $6.0 million asset in property, plant and equipment and a corresponding liability of $6.0 million. As of both December 31, 2014 and 2013, the corresponding asset, net of accumulated amortization, was $0.

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 customer. These programming contracts are subject to negotiated renewal. Programming costs are recognized when we distribute the related programming. These programming costs 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. Some content suppliers offer financial incentives to support the launch of a channel and ongoing marketing support. When such financial incentives are received, we defer them within non-current liabilities in our consolidated balance sheets and recognize such amounts 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

In December 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2013-12 (“ASU 2013-12”) – Definition of a Public Business Entity. ASU 2013-12 defines a public business entity to be used in considering the scope of new financial guidance and identifies whether the guidance does or does not apply to public business entities. The Accounting Standards Codification includes multiple definitions of the terms nonpublic entity and public entity. ASU 2013-12 states that an entity that is required by the SEC to file or furnish financial statements with the SEC, or does file or furnish financial statements with the SEC, is considered a public business entity. There is no effective date for ASU 2013-12. We adopted ASU 2013-12 as of December 31, 2013. We are deemed to be a public entity according to this guidance.

In May 2014, the FASB issued ASU No. 2014-09 (“ASU 2014-09”) – Revenue from Contracts with Customers. The guidance states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should also disclose sufficient information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance supersedes most industry-specific guidance, including Statement of Financial Accounting Standards No. 51 – Financial Reporting by Cable Television Companies. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. We have not completed our evaluation of this new guidance to determine its impact on our financial statements, financial disclosures and our method of adoption.

- Definition

The entire disclosure for all significant accounting policies of the reporting entity.

+ References+ Details

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3. PROPERTY, PLANT AND EQUIPMENT

As of December 31, 2014 and 2013, property, plant and equipment consisted of (dollars in thousands):


	December 31, 2014			December 31, 2013
Cable systems, equipment and customer devices	$	2,161,767		$	2,059,980
Furniture, fixtures and office equipment		47,524			52,157
Vehicles		37,831			37,938
Buildings and leasehold improvements		17,159			16,907
Land and land improvements		1,550			1,581

Property, plant and equipment, gross	$	2,265,831		$	2,168,563
Accumulated depreciation		(1,592,999	)		(1,499,404	)

Property, plant and equipment, net	$	672,832		$	669,159

Depreciation expense related to fixed assets for the years ended December 31, 2014, 2013 and 2012 was $116.4 million, $115.3 million and $115.2 million, respectively. As of each of December 31, 2014, 2013 and 2012, we had no property under capitalized leases. We incurred gross interest costs of $88.0 million, $95.8 million and $97.1 million for the years ended December 31, 2014, 2013 and 2012 respectively, of which $1.1 million, $1.3 million and $1.2 million were capitalized during the years ended December 31, 2014, 2013 and 2012, respectively. See Note 2.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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Fair Value

12 Months Ended

Dec. 31, 2014

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 at December 31, 2014 and December 31, 2013. 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, which prioritizes the inputs used in measuring fair value, as follows:

•

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.

As of December 31, 2014, our interest rate swap liabilities, net, were valued at $11.8 million using Level 2 inputs, as follows (dollars in thousands):


	Fair Value as of December 31, 2014
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	11,761	$	—	$	11,761

Interest rate exchange agreements-liabilities, net	$	—	$	11,761	$	—	$	11,761

As of December 31, 2013, our interest rate swap liabilities, net, were valued at $30.0 million using Level 2 inputs, as follows (dollars in thousands):


	Fair Value as of December 31, 2013
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	29,989	$	—	$	29,989

Interest rate exchange agreements - liabilities, net	$	—	$	29,989	$	—	$	29,989

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.

All of our interest rate swaps were in a liability position as of each of December 31, 2014 and December 31, 2013, based upon their mark-to-market valuation, and therefore no assets were recorded on our consolidated balance sheets. As of December 31, 2014, we recorded a current liability in accounts payable, accrued expenses and other current liabilities of $11.8 million. As of the same date, there was no long-term liability. As of December 31, 2013, we recorded a current liability in accounts payable, accrued expenses and other current liabilities of $19.4 million and an accumulated long-term liability in other non-current liabilities of $10.6 million.

As a result of the changes in the mark-to-market valuations on these interest rate swaps, we recorded net gains on derivatives of $18.2 million, $18.0 million and $5.1 million for the years ended December 31, 2014, 2013 and 2012, 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, 2014

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, 2014 and 2013 (dollars in thousands):


	December 31, 2014		December 31, 2013
Accounts payable-trade	$	28,238	$	24,282
Accrued programming costs		19,966		19,927
Accrued taxes and fees		15,767		16,115
Accrued payroll and benefits		12,090		14,271
Liabilities under interest rate exchange agreements		11,761		19,354
Advance customer payments		10,922		10,678
Accrued interest		7,247		19,694
Accrued service costs		6,685		8,200
Bank overdrafts ⁽¹⁾		3,822		2,866
Accrued property, plant and equipment		3,586		3,923
Accrued telecommunications costs		1,055		1,368
Other accrued expenses		9,567		8,380

Accounts payable, accrued expenses and other current liabilities	$	130,706	$	149,058

⁽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, 2014

Debt Disclosure [Abstract]

Debt

6. DEBT

As of December 31, 2014 and 2013, our outstanding debt consisted of (dollars in thousands):


	December 31, 2014		December 31, 2013
Bank credit facility	$	1,005,000	$	852,000
9¹⁄₈% senior notes due 2019		—		350,000
7¹⁄₄% senior notes due 2022		250,000		250,000

Total debt	$	1,255,000	$	1,452,000
Less: current portion		8,500		15,250

Total long-term debt	$	1,246,500	$	1,436,750

Bank Credit Facility

As of December 31, 2014, we maintained a $1.061 billion bank credit facility (the “credit facility”), comprising:

•

$225.0 million of revolving credit commitments, which expire on February 5, 2019;

•

$238.8 million of outstanding borrowings under Term Loan E, which mature on October 23, 2017;

•

$248.1 million of outstanding borrowings under Term Loan F, which mature on March 31, 2018; and

•

$349.1 million of outstanding borrowings under Term Loan G, which mature on June 30, 2021.

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, 2014, 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, 2014, our operating subsidiaries were in compliance with all covenants under the credit agreement.

Revolving Credit Commitments

On February 5, 2014, we terminated our existing revolving credit commitments and, on the same date, entered into an amended and restated credit agreement which, among other things, provided for $225.0 million of new revolving credit commitments, which are scheduled to expire on February 5, 2019.

Borrowings under our revolving credit commitments bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin ranging from 2.00% to 2.75%, or the Prime Rate plus a margin ranging from 1.00% to 1.75%. Commitment fees on the unused portion of our revolving credit commitments are payable at a rate of 0.38% or 0.50%. The applicable margin and commitment fees charged are determined by certain financial ratios pursuant to the credit agreement.

As of December 31, 2014, we had $47.1 million of unused revolving credit commitments, all of which were available to be borrowed and used for general corporate purposes, after giving effect to $169.0 million of outstanding loans and $8.9 million of letters of credit issued to various parties as collateral.

Term Loan E

On April 23, 2010, we entered into an incremental facility agreement that provided for a term loan in the original principal amount of $250.0 million (“Term Loan E”). Term Loan E matures on October 23, 2017 and, since September 30, 2010, has been subject to quarterly reductions of $0.6 million, representing 0.25% of the original principal amount, with a final payment at maturity of $231.9 million, representing 92.75% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan E was $238.8 million.

Borrowings under Term Loan E bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 3.00%, or the Prime Rate plus a margin of 2.00%.

Term Loan F

On February 5, 2014, we entered into an amended and restated credit agreement that, among other things, provided for a term loan in the original principal amount of $250.0 million (“Term Loan F”). After giving effect to $4.7 million of financing costs, net proceeds of $245.3 million under Term Loan F were used to fund, in part, a $400.0 million partial repayment of the principal amount outstanding under the previously existing Term Loan C. Term Loan F matures on March 31, 2018 and, since June 30, 2014, has been subject to quarterly reductions of $0.6 million, representing 0.25% of the original principal amount, with a final payment at maturity of $240.6 million, representing 96.25% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan F was $248.1 million.

Borrowings under Term Loan F bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.50%, or the Prime Rate plus a margin of 1.50%.

Term Loan G

On August 15, 2014, we entered into an incremental facility agreement that provided for a new term loan in the original principal amount of $350.0 million (“Term Loan G”). After giving effect to $5.2 million of financing costs, net proceeds of $344.8 million under Term Loan G were used to substantially fund the redemption of our previously existing 9¹⁄₈% senior notes due August 2019 (the “9¹⁄₈% Notes”). Term Loan G matures on June 30, 2021 and, since December 31, 2014, has been subject to quarterly principal reductions of $0.9 million, representing 0.25% of the original principal amount, with a final payment at maturity of $327.3 million, representing 93.50% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan G was $349.1 million.

Borrowings under Term Loan G bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.75% or 3.00% (subject to a minimum LIBOR of 0.75%), or the Prime Rate plus a margin of 1.75% or 2.00% (subject to a minimum Prime Rate of 1.75%). The applicable margin charged is determined by certain financial ratios pursuant to the credit agreement.

Interest Rate Swaps

We have entered into several interest rate swaps with various banks to fix the variable rate of borrowings 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, 2014, 2013 and 2012. As of December 31, 2014, we had interest rate swaps which fixed the variable portion of $500.0 million of borrowings at a rate of 2.7%, which are scheduled to expire during the year ending December 31, 2015.

As of December 31, 2014, the weighted average interest rate on outstanding borrowings under the credit facility, including the effect of our interest rate swaps, was 4.3%.

Senior Notes

As of December 31, 2014, we had $250.0 million of outstanding senior notes, all of which comprised our 7¹⁄₄% senior notes due February 2022 (the “7¹⁄₄% Notes”). Our senior notes are unsecured obligations, and the indenture governing the 7¹⁄₄% 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, 2014, we were in compliance with all the covenants under the indenture.

7 ¹⁄₄% Notes

On February 7, 2012, we issued 7¹⁄₄% Notes in the aggregate principal amount of $250.0 million. Together with borrowings under the credit facility, the net proceeds from the 7¹⁄₄% Notes of $245.0 million were used to repay certain previously existing term loans.

9 ¹⁄₈% Notes

On July 16, 2014, we called for the redemption of the entire $350.0 million principal amount outstanding under our 9¹⁄₈% Notes. On August 15, 2014, the 9¹⁄₈% Notes were redeemed at a price equal to $1,045.63 for each $1,000 principal amount outstanding, for an aggregate redemption price of $366.0 million, which was substantially funded with proceeds from the issuance of Term Loan G.

As a result of the redemption of the 9¹⁄₈% Notes, we recorded a loss on early extinguishment of debt, net, of $23.0 million for the year ended December 31, 2014, which represented the $16.0 million redemption price paid above par and the write-off of $7.0 million of unamortized financing costs.

Other Assets

Other assets, net, primarily include financing costs and original issue discount incurred to raise debt, which are deferred and amortized as interest expense over the expected term of such financings. Original issue discount, as recorded in other assets, net, was $2.6 million and $5.3 million as of December 31, 2014 and 2013, respectively.

Debt Ratings

MCC’s corporate credit ratings are Ba3 by Moody’s, and BB- by Standard and Poor’s (“S&P”), both with stable outlooks. Our senior unsecured ratings are B2 by Moody’s, and B by S&P, both with stable outlooks. 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

As of December 31, 2014 and 2013, 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 (dollars in thousands):


	December 31,
	2014		2013
9¹⁄₈% senior notes due 2019	$	—	$	380,188
7¹⁄₄% senior notes due 2022		268,125		266,250

Total senior notes	$	268,125	$	646,438



Bank credit facility	$	985,752	$	850,336

The scheduled maturities of all debt outstanding as of December 31, 2014 are as follows (dollars in thousands):


	Bank Credit Facility				Senior
	Revolving Credit		Term Loans		Notes		Total

January 1, 2015 to December 31, 2015	$	—	$	8,500	$	—	$	8,500
January 1, 2016 to December 31, 2016		—		8,500		—		8,500
January 1, 2017 to December 31, 2017		—		239,750		—		239,750
January 1, 2018 to December 31, 2018		—		244,125		—		244,125
January 1, 2019 to December 31, 2019		169,000		3,500		—		172,500
Thereafter		—		331,625		250,000		581,625

	$	169,000	$	836,000	$	250,000	$	1,255,000

Preferred Membership Interest in Affiliated Company	12 Months Ended
Preferred Membership Interest in Affiliated Company	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Preferred Membership Interest in Affiliated Company	7. PREFERRED MEMBERSHIP INTEREST IN AFFILIATED COMPANY In July 2001, we made a $150.0 million preferred membership interest in Mediacom Broadband LLC, which has a 12% annual dividend, payable quarterly in cash. We received $18.0 million in cash dividends on the preferred membership interest during each of the years ended December 31, 2014, 2013 and 2012.

- Definition

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

+ References+ Details

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	9. RELATED PARTY TRANSACTIONS Management Agreements MCC manages us pursuant to a management agreement 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 4.5% 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 $12.4 million, $12.4 million and $11.9 million during the years ended December 31, 2014, 2013 and 2012, respectively. We are a preferred equity investor in Mediacom Broadband LLC. See Note 7.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References+ Details

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2014
Compensation and Retirement Disclosure [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 such Plan, eligible employees may contribute up to 15% of their current pretax compensation. 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 $1.1 million, $1.0 million and $0.8 million for the years ended December 31, 2014, 2013 and 2012, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References+ Details

Deferred Compensation	12 Months Ended
Deferred Compensation	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Deferred Compensation	11. DEFERRED COMPENSATION For the years ended December 31, 2014, 2013 and 2012, we recorded $0.1 million, $0.3 million and $0.7 million, respectively, of deferred compensation expense (formerly share-based compensation expense). These expenses represented the unvested stock options and restricted stock units under the former share-based compensation plans at their original grant-date fair value, modified for the right to receive $8.75 in cash. This amount also included the recognition of cash-based deferred compensation awarded in the years ended 2014, 2013, and 2012 which has vesting attributes similar to the former share-based awards.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

12. COMMITMENTS AND CONTINGENCIES

Under various lease and rental agreements for offices, warehouses and computer terminals, we had rental expense of $3.8 million, $3.8 million and $3.5 million for the years ended December 31, 2014, 2013 and 2012, respectively. Future minimum annual rental payments as of December 31, 2014 are as follows (dollars in thousands):


January 1, 2015 to December 31, 2015	$	2,243
January 1, 2016 to December 31, 2016		1,899
January 1, 2017 to December 31, 2017		1,524
January 1, 2018 to December 31, 2018		1,121
January 1, 2019 to December 31, 2019		640
Thereafter		2,001

Total	$	9,428

In addition, we rent utility poles in our operations generally under short-term arrangements, but we expect these arrangements to recur. Total rental expense for utility poles was $5.5 million, $6.1 million and $5.8 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Letters of Credit

As of December 31, 2014, $8.9 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.

- Definition

The entire disclosure for commitments and contingencies.

+ References+ Details

Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Schedule II

MEDIACOM LLC AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS


			Additions				Deductions
	Balance at beginning of period		Charged to costs and expenses		Charged to other accounts		Charged to costs and expenses		Charged to other accounts		Balance at end of period
December 31, 2012
Allowance for doubtful accounts:
Current receivables	$	740	$	3,813	$	—	$	2,671	$	—	$	1,882

December 31, 2013
Allowance for doubtful accounts:
Current receivables	$	1,882	$	2,530	$	—	$	2,402	$	—	$	2,010

December 31, 2014
Allowance for doubtful accounts:
Current receivables	$	2,010	$	5,632	$	—	$	5,507	$	—	$	2,135

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

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		40 Years
Leasehold improvements		Life of respective lease
Cable systems and equipment and subscriber devices		5 to 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 $16.2 million, $15.2 million and $14.6 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Intangible Assets

Intangible Assets

The following table details changes in the carrying value of goodwill for the years ended December 31, 2014 and 2013, respectively, (dollars in thousands):


Balance - December 31, 2012	$	23,911
Acquisitions		—
Dispositions		—

Balance - December 31, 2013	$	23,911

Acquisitions		—
Dispositions		—

Balance - December 31, 2014	$	23,911

Segment Reporting

Segment Reporting

Accounting for Derivative Instruments

Accounting for Derivative Instruments

Accounting for Asset Retirement

Accounting for Asset Retirement

Accounting for Long-Lived Assets

Accounting for Long-Lived Assets

Programming Costs

Programming Costs

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Estimated Useful Lives

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


Buildings		40 Years
Leasehold improvements		Life of respective lease
Cable systems and equipment and subscriber devices		5 to 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, 2014 and 2013, respectively, (dollars in thousands):


Balance - December 31, 2012	$	23,911
Acquisitions		—
Dispositions		—

Balance - December 31, 2013	$	23,911

Acquisitions		—
Dispositions		—

Balance - December 31, 2014	$	23,911

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

As of December 31, 2014 and 2013, property, plant and equipment consisted of (dollars in thousands):


	December 31, 2014			December 31, 2013
Cable systems, equipment and customer devices	$	2,161,767		$	2,059,980
Furniture, fixtures and office equipment		47,524			52,157
Vehicles		37,831			37,938
Buildings and leasehold improvements		17,159			16,907
Land and land improvements		1,550			1,581

Property, plant and equipment, gross	$	2,265,831		$	2,168,563
Accumulated depreciation		(1,592,999	)		(1,499,404	)

Property, plant and equipment, net	$	672,832		$	669,159

Fair Value (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value of Interest Rate Swap Liabilities

As of December 31, 2014, our interest rate swap liabilities, net, were valued at $11.8 million using Level 2 inputs, as follows (dollars in thousands):


	Fair Value as of December 31, 2014
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	11,761	$	—	$	11,761

Interest rate exchange agreements-liabilities, net	$	—	$	11,761	$	—	$	11,761

As of December 31, 2013, our interest rate swap liabilities, net, were valued at $30.0 million using Level 2 inputs, as follows (dollars in thousands):


	Fair Value as of December 31, 2013
	Level 1		Level 2		Level 3		Total
Assets
Interest rate exchange agreements	$	—	$	—	$	—	$	—

Liabilities
Interest rate exchange agreements	$	—	$	29,989	$	—	$	29,989

Interest rate exchange agreements - liabilities, net	$	—	$	29,989	$	—	$	29,989

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

12 Months Ended

Dec. 31, 2014

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, 2014 and 2013 (dollars in thousands):


	December 31, 2014		December 31, 2013
Accounts payable-trade	$	28,238	$	24,282
Accrued programming costs		19,966		19,927
Accrued taxes and fees		15,767		16,115
Accrued payroll and benefits		12,090		14,271
Liabilities under interest rate exchange agreements		11,761		19,354
Advance customer payments		10,922		10,678
Accrued interest		7,247		19,694
Accrued service costs		6,685		8,200
Bank overdrafts ⁽¹⁾		3,822		2,866
Accrued property, plant and equipment		3,586		3,923
Accrued telecommunications costs		1,055		1,368
Other accrued expenses		9,567		8,380

Accounts payable, accrued expenses and other current liabilities	$	130,706	$	149,058

⁽¹⁾

Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Summary of Outstanding Debt

As of December 31, 2014 and 2013, our outstanding debt consisted of (dollars in thousands):


	December 31, 2014		December 31, 2013
Bank credit facility	$	1,005,000	$	852,000
9¹⁄₈% senior notes due 2019		—		350,000
7¹⁄₄% senior notes due 2022		250,000		250,000

Total debt	$	1,255,000	$	1,452,000
Less: current portion		8,500		15,250

Total long-term debt	$	1,246,500	$	1,436,750

Fair Values of Senior Notes and Outstanding Debt


	December 31,
	2014		2013
9¹⁄₈% senior notes due 2019	$	—	$	380,188
7¹⁄₄% senior notes due 2022		268,125		266,250

Total senior notes	$	268,125	$	646,438



Bank credit facility	$	985,752	$	850,336

Scheduled Maturities of all Debt Outstanding

The scheduled maturities of all debt outstanding as of December 31, 2014 are as follows (dollars in thousands):


	Bank Credit Facility				Senior
	Revolving Credit		Term Loans		Notes		Total

January 1, 2015 to December 31, 2015	$	—	$	8,500	$	—	$	8,500
January 1, 2016 to December 31, 2016		—		8,500		—		8,500
January 1, 2017 to December 31, 2017		—		239,750		—		239,750
January 1, 2018 to December 31, 2018		—		244,125		—		244,125
January 1, 2019 to December 31, 2019		169,000		3,500		—		172,500
Thereafter		—		331,625		250,000		581,625

	$	169,000	$	836,000	$	250,000	$	1,255,000

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Summary of Future Minimum Annual Rental Payments

Future minimum annual rental payments as of December 31, 2014 are as follows (dollars in thousands):


January 1, 2015 to December 31, 2015	$	2,243
January 1, 2016 to December 31, 2016		1,899
January 1, 2017 to December 31, 2017		1,524
January 1, 2018 to December 31, 2018		1,121
January 1, 2019 to December 31, 2019		640
Thereafter		2,001

Total	$	9,428

Organization - Additional Information (Detail) (USD $)	Dec. 31, 2014
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+ Details

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2014 Franchise Segment	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Percentage of gross revenue required to pay franchise fees		5.00%
Franchise fees		$ 12,400,000	$ 11,500,000	$ 11,600,000
Software development costs		100,000	200,000
Net book value of capitalized software		1,300,000	2,100,000
Capitalized computer software, period decrease			9,500,000
Marketing and promotional costs expense		16,200,000	15,200,000	14,600,000
Number of franchises held		853
Impairment loss of Goodwill	0
Number of reportable segment		1
Asset in property, plant and equipment		1,539,358,000	1,545,938,000
Liability in property, plant and equipment		1,417,143,000	1,651,231,000
Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment loss of franchise rights	0
Property, Plant and Equipment, Other Types [Member]
Finite-Lived Intangible Assets [Line Items]
Asset in property, plant and equipment		6,000,000
Liability in property, plant and equipment		6,000,000
Accumulated depreciation		0	0
Designated as Hedges [Member]
Finite-Lived Intangible Assets [Line Items]
Derivative financial instruments designated as hedges		$ 0
Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Other finite-lived intangible assets useful lives		5 years

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2014
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements	Life of respective lease
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Minimum [Member] \| Cable Systems, Equipment and Customer Devices [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Minimum [Member] \| Vehicles [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	4 years
Maximum [Member] \| Cable Systems, Equipment and Customer Devices [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	20 years
Maximum [Member] \| Vehicles [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, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Beginning Balance	$ 23,911	$ 23,911
Acquisitions	0	0
Dispositions	0	0
Ending Balance	$ 23,911	$ 23,911

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,265,831	$ 2,168,563
Accumulated depreciation	(1,592,999)	(1,499,404)
Property, plant and equipment, net	672,832	669,159
Cable Systems, Equipment and Customer Devices [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,161,767	2,059,980
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	47,524	52,157
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37,831	37,938
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,159	16,907
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,550	$ 1,581

Property, Plant and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 116,400,000	$ 115,300,000	$ 115,200,000
Property under capitalized leases	0	0	0
Interest costs	88,000,000	95,800,000	97,100,000
Interest costs capitalized	$ 1,100,000	$ 1,300,000	$ 1,200,000

Fair Value - Additional Information (Detail) (USD $)	12 Months Ended
Fair Value - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current liability in accounts payable, accrued expenses and other current liabilities	$ 11,800,000	$ 19,400,000
Accumulated long-term liability in other non-current liabilities	0	10,600,000
Net gain on derivatives	18,200,000	18,000,000	5,100,000
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, net	11,761,000	29,989,000
Derivative assets	0	0
Level 2 [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, net	$ 11,761,000	$ 29,989,000

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

Fair Value - Fair Value of Interest Rate Swap Liabilities (Detail) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 0	$ 0
Liabilities	11,761	29,989
Liabilities, net	11,761	29,989
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Liabilities	11,761	29,989
Liabilities, net	11,761	29,989
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 0	$ 0

Accounts Payable, Accrued Expenses and Other Current Liabilities - Summary of Accounts Payable, Accrued Expenses and Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Accounts payable-trade	$ 28,238	$ 24,282
Accrued programming costs	19,966	19,927
Accrued taxes and fees	15,767	16,115
Accrued payroll and benefits	12,090	14,271
Liabilities under interest rate exchange agreements	11,761	19,354
Advance customer payments	10,922	10,678
Accrued interest	7,247	19,694
Accrued service costs	6,685	8,200
Bank overdrafts	3,822	2,866
Accrued property, plant and equipment	3,586	3,923
Accrued telecommunications costs	1,055	1,368
Other accrued expenses	9,567	8,380
Accounts payable, accrued expenses and other current liabilities	$ 130,706	$ 149,058

Debt - Summary of Outstanding Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total debt	$ 1,255,000	$ 1,452,000
Total debt	1,255,000	1,452,000
Less: current portion	8,500	15,250
Total long-term debt	1,246,500	1,436,750
9 1/8% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Total debt		350,000
Total debt		350,000
7 1/4% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Total debt	250,000	250,000
Total debt	250,000	250,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	1,005,000	852,000
Total debt	$ 1,005,000	$ 852,000

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References+ Details

Debt - Additional Information (Detail) (USD $)	12 Months Ended			12 Months Ended			12 Months Ended			0 Months Ended	12 Months Ended				0 Months Ended								0 Months Ended				0 Months Ended				0 Months Ended								0 Months Ended				12 Months Ended		12 Months Ended
Debt - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2014 Interest Rate Swap [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Not Designated as Hedging Instrument [Member]	Dec. 31, 2014 Loans Payable [Member]	Dec. 31, 2014 9 1/8% Senior Notes Due 2019 [Member]	Aug. 15, 2014 9 1/8% Senior Notes Due 2019 [Member]	Jul. 16, 2014 9 1/8% Senior Notes Due 2019 [Member]	Feb. 07, 2012 7 1/4% Senior Notes Due 2022 [Member]	Dec. 31, 2014 7 1/4% Senior Notes Due 2022 [Member]	Feb. 07, 2012 7 1/4% Senior Notes Due 2022 [Member]	Dec. 31, 2014 7 1/4% Senior Notes Due 2022 [Member] Maximum [Member]	Dec. 31, 2014 7 1/4% Senior Notes Due 2022 [Member] Minimum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] Maximum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] Minimum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] LIBOR [Member] Maximum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] LIBOR [Member] Minimum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] Prime Rate [Member] Maximum [Member]	Feb. 05, 2014 Revolving Credit Commitments at Present [Member] Prime Rate [Member] Minimum [Member]	Apr. 23, 2014 Term Loan E [Member]	Apr. 23, 2014 Term Loan E [Member]	Apr. 23, 2014 Term Loan E [Member] LIBOR [Member]	Apr. 23, 2014 Term Loan E [Member] Prime Rate [Member]	Feb. 05, 2014 Term Loan F [Member]	Feb. 05, 2014 Term Loan F [Member]	Feb. 05, 2014 Term Loan F [Member] LIBOR [Member]	Feb. 05, 2014 Term Loan F [Member] Prime Rate [Member]	Aug. 15, 2014 Term Loan G [Member]	Aug. 15, 2014 Term Loan G [Member]	Aug. 15, 2014 Term Loan G [Member] LIBOR [Member]	Aug. 15, 2014 Term Loan G [Member] LIBOR [Member] Maximum [Member]	Aug. 15, 2014 Term Loan G [Member] LIBOR [Member] Minimum [Member]	Aug. 15, 2014 Term Loan G [Member] Prime Rate [Member]	Aug. 15, 2014 Term Loan G [Member] Prime Rate [Member] Maximum [Member]	Aug. 15, 2014 Term Loan G [Member] Prime Rate [Member] Minimum [Member]	Aug. 15, 2014 Term Loan G [Member] 9 1/8% Senior Notes Due 2019 [Member]	Dec. 31, 2014 Letter of Credit [Member]	Feb. 05, 2014 Term Loan C [Member]	Dec. 31, 2014 Bank Credit Facility [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Maximum [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Minimum [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Revolving Credit Commitments at Present [Member]	Feb. 05, 2014 Bank Credit Facility [Member] Revolving Credit Commitments at Present [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Term Loan E [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Term Loan F [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Term Loan G [Member]	Dec. 31, 2014 Bank Credit Facility [Member] Term Loan G [Member] 9 1/8% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Revolving credit commitment outstanding					$ 500,000,000	$ 169,000,000																																$ 8,900,000		$ 1,061,000,000					$ 238,800,000	$ 248,100,000	$ 349,100,000
Revolving credit commitments																																											225,000,000	225,000,000
Expiration date of revolving credit commitments				Dec. 31, 2015																																							Feb. 05, 2019		Oct. 23, 2017	Mar. 31, 2018	Jun. 30, 2021
Leverage ratio																																									5.0	1.0
Interest coverage ratio																																									2.0	1.0
Floating rate margin																	2.75%	2.00%	1.75%	1.00%			3.00%	2.00%			2.50%	1.50%			2.75%	3.00%	0.75%	1.75%	2.00%	1.75%
Rate of commitment fees on the unused portion of revolving credit commitments															0.50%	0.38%
Unused revolving credit commitments																																								47,100,000
Original principal amount									350,000,000			250,000,000										250,000,000				250,000,000				350,000,000
Quarterly reductions of original principal amount																					600,000				600,000				900,000
Rate of quarterly reductions of original principal amount																					0.25%				0.25%				0.25%
Final payment at maturity representing the original principal amount																						231,900,000				240,600,000				327,300,000
Rate of final payment at maturity representing the original principal amount																					92.75%				96.25%				93.50%
Financing costs	9,878,000	5,008,000																							4,700,000				5,200,000
Net proceeds from Term Loan																									245,300,000
Repayment of debt																																							400,000,000
Net proceeds from Term Loan																													344,800,000
Debt instrument, Interest rate							9.125%		9.125%		7.25%	7.25%																									9.125%
Senior notes expiration date											February 2022																																					August 2019
Interest rate on borrowings				2.70%
Average interest rate on outstanding borrowings				4.30%
Outstanding senior notes											250,000,000
Required debt to operating cash flow													8.5	1.0
Proceeds from issuance of senior notes		250,000,000								245,000,000
Redemption description							On July 16, 2014, we called for the redemption of the entire $350.0 million principal amount outstanding under our 9 1/8% Notes.
Redemption price per $1,000 unit principal amount outstanding								1,045.63
Original principal amount per unit								1,000
Aggregate redemption price								366,000,000
Loss on early extinguishment of debt	(23,046,000)	(6,468,000)					23,000,000
Redemption price paid above par							16,000,000
Write-off of unamortized financing costs							7,000,000
Original issue discount, as recorded in other assets, net	$ 2,600,000		$ 5,300,000

Debt - Scheduled Maturities of all Debt Outstanding (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
January 1, 2015 to December 31, 2015	$ 8,500
January 1, 2016 to December 31, 2016	8,500
January 1, 2017 to December 31, 2017	239,750
January 1, 2018 to December 31, 2018	244,125
January 1, 2019 to December 31, 2019	172,500
Thereafter	581,625
Total debt	1,255,000	1,452,000
Senior Notes [Member]
Debt Instrument [Line Items]
Thereafter	250,000
Total debt	250,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	1,005,000	852,000
Bank Credit Facility [Member] \| Revolving Credit [Member]
Debt Instrument [Line Items]
January 1, 2019 to December 31, 2019	169,000
Total debt	169,000
Bank Credit Facility [Member] \| Term Loans [Member]
Debt Instrument [Line Items]
January 1, 2015 to December 31, 2015	8,500
January 1, 2016 to December 31, 2016	8,500
January 1, 2017 to December 31, 2017	239,750
January 1, 2018 to December 31, 2018	244,125
January 1, 2019 to December 31, 2019	3,500
Thereafter	331,625
Total debt	$ 836,000

- Definition

+ References+ Details

Preferred Membership Interest in Affiliated Company - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2001
Schedule of Equity Method Investments [Line Items]
Preferred membership investment	$ 150,000	$ 150,000
Cash dividends on preferred membership interest	18,000	18,000	18,000
Mediacom Broadband LLC [Member]
Schedule of Equity Method Investments [Line Items]
Preferred membership investment				150,000
Preferred annual cash dividend	12.00%
Cash dividends on preferred membership interest	$ 18,000	$ 18,000	$ 18,000

Member's Equity (Deficit) - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Capital distributions to parent	$ 3,500	$ 3,800	$ 121,400
Received capital contributions from parent	$ 155,600		$ 111,000

Related Party Transactions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Management fees charged by MCC	$ 12,350	$ 12,400	$ 11,885
MCC [Member] \| Service [Member]
Related Party Transaction [Line Items]
Management fees charged by MCC	$ 12,400	$ 12,400	$ 11,900
MCC [Member] \| Service [Member] \| Maximum [Member] \| Operating Revenues [Member] \| Management Agreement Concentration Risk [Member]
Related Party Transaction [Line Items]
Rate of annual gross operating revenues of our operating subsidiaries	4.50%

Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Maximum percentage of employee contribution	15.00%
Present matching contribution of employee	50.00%
Percentage of employee contribution	6.00%
Total contribution	$ 1.1	$ 1.0	$ 0.8

Deferred Compensation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Recorded deferred compensation expense	$ 0.1	$ 0.3	$ 0.7
Cash received	$ 8.75

Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Rental expense	$ 3.8	$ 3.8	$ 3.5
Total rental expense for utility poles	5.5	6.1	5.8
Letters of credit issued	$ 8.9

Commitments and Contingencies - Summary of Future Minimum Annual Rental Payments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
January 1, 2015 to December 31, 2015	$ 2,243
January 1, 2016 to December 31, 2016	1,899
January 1, 2017 to December 31, 2017	1,524
January 1, 2018 to December 31, 2018	1,121
January 1, 2019 to December 31, 2019	640
Thereafter	2,001
Total	$ 9,428

Schedule II - Valuation and Qualifying Accounts (Detail) (Current Receivables [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 2,010	$ 1,882	$ 740
Additions, Charged to costs and expenses	5,632	2,530	3,813
Additions, Charged to other accounts	0	0	0
Deductions, Charged to costs and expenses	5,507	2,402	2,671
Deductions, Charged to other accounts	0	0	0
Balance at end of period	$ 2,135	$ 2,010	$ 1,882

Debt - Fair Values of Senior Notes and Outstanding Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total senior notes	$ 268,125	$ 646,438
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total senior notes	985,752	850,336
9 1/8% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Total senior notes		380,188
7 1/4% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Total senior notes	$ 268,125	$ 266,250