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Condensed Consolidating Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES | $ 431,103 | [1] | $ 421,466 | [1] | $ 425,005 | [1] | $ 416,723 | [1] | $ 427,677 | [1] | $ 435,727 | [1] | $ 433,897 | [1] | $ 426,356 | [1] | $ 1,694,297 | $ 1,723,657 | $ 1,688,805
EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,220,351 | 1,217,051 | 1,158,269
General and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 103,590 | 88,935 | 91,227
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 112,692 | 113,063 | 107,568
Asset impairments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,513 |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,443,146 | 1,419,049 | 1,357,064
Operating income | 56,019 | [1] | 67,271 | [1] | 67,969 | [1] | 59,892 | [1] | 80,299 | [1] | 79,733 | [1] | 75,125 | [1] | 69,451 | [1] | 251,151 | 304,608 | 331,741
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 45,126 | 58,363 | 72,940
Expenses associated with debt refinancing transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36,528 | 2,099 |
Other (income) expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (100) | (333) | 305
Total non-operating expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 81,554 | 60,129 | 73,245
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 169,597 | 244,479 | 258,496
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 134,995 | (87,513) | (96,166)
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 304,592 | 156,966 | 162,330
Loss from discontinued operations, net of taxes |  |  | (663) | [1] | (2,739) | [1] | (355) | [1] | 150 | [1] | 99 | [1] | (150) | [1] | (304) | [1] | (3,757) | (205) | 180
NET INCOME | 47,471 | [1] | 51,843 | [1] | 20,429 | [1] | 181,092 | [1] | 45,408 |  | 42,339 |  | 37,334 |  | 31,680 |  | 300,835 | 156,761 | 162,510
Parent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,268,763 | 1,411,277 |
EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 945,750 | 943,803 |
General and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 31,290 | 70,792 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 76,112 | 74,452 |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,053,152 | 1,089,047 |
Operating income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 215,611 | 322,230 |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 38,319 | 57,174 |
Expenses associated with debt refinancing transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,563 | 2,099 |
Other (income) expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (45) | 16 |
Total non-operating expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 66,837 | 59,289 |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 148,774 | 262,941 |
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 143,590 | (93,870) |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 292,364 | 169,071 |
Income from equity in subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,471 | (12,310) |
NET INCOME |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,835 | 156,761 |
Combined Subsidiary Guarantors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,351,695 | 329,971 |
EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,762 | 290,839 |
General and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 72,300 | 18,143 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36,580 | 38,611 |
Asset impairments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,513 |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,316,155 | 347,593 |
Operating income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,540 | (17,622) |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,807 | 1,189 |
Expenses associated with debt refinancing transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,965 |  |
Other (income) expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23 | (26) |
Total non-operating expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,795 | 1,163 |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,745 | (18,785) |
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8,595) | 6,357 |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,150 | (12,428) |
Loss from discontinued operations, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,757) | (205) |
NET INCOME |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,393 | (12,633) |
Consolidating Adjustments and Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (926,161) | (17,591) |
EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (926,161) | (17,591) |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (926,161) | (17,591) |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other (income) expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (78) | (323) |
Total non-operating expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (78) | (323) |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 78 | 323 |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 78 | 323 |
Income from equity in subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8,471) | 12,310 |
NET INCOME |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (8,393) | $ 12,633 |
[1] | The amounts presented for the first two quarters of 2013 and the four quarters of 2012 are not equal to the same amounts previously reported in the respective reports on Form 10-Q and Form 10-K for each period as a result of discontinued operations. Below is a reconciliation to the previously reported amounts in Form 10-Q.

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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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