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Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Revenues |  |  |  |
Total revenues | $ 230,046 | $ 372,378 | $ 410,433 | $ 721,897
Operating expenses |  |  |  |
General and administrative expenses | 21,508 | 20,751 | 44,832 | 44,271
Other operating expenses |  | 188,722 | 406,673 | 369,034
Total operating expenses | 237,483 | 209,473 | 451,505 | 413,305
Gain on sale of properties | 0 | 3,640 | 0 | 187,033
Operating income (loss) | (7,437) | 166,545 | (41,072) | 495,625
Other income (expense) |  |  |  |
Interest expense, net of capitalized interest | (37,405) | (38,990) | (76,189) | (79,148)
Other income (expense) | (76,638) | (65,435) | 7,769 | (82,885)
Income (loss) before income taxes | (84,075) | 62,120 | (109,492) | 333,592
Income tax benefit (expense) | 30,845 | (23,287) | 38,221 | (124,806)
Net income (loss) | (53,230) | 38,833 | (71,271) | 208,786
Parent/Issuer [Member] |  |  |  |
Operating expenses |  |  |  |
General and administrative expenses |  | 5,805 | 14,944 | 11,417
Total operating expenses | 6,325 |  |  |
Operating income (loss) | (6,325) | (5,805) | (14,944) | (11,417)
Other income (expense) |  |  |  |
Equity in earnings in subsidiaries | (34,249) | 65,485 | (21,630) | 262,418
Interest expense, net of capitalized interest |  | (36,705) | (69,415) | (74,129)
Other income (expense) | (34,189) |  | 4 | 3
Income (loss) before income taxes | (74,763) | 22,975 | (105,985) | 176,875
Income tax benefit (expense) | 21,533 | 15,858 | 34,714 | 31,911
Net income (loss) | (53,230) | 38,833 | (71,271) | 208,786
Combined Guarantor Subsidiaries [Member] |  |  |  |
Revenues |  |  |  |
Total revenues | 230,046 | 372,378 | 410,433 | 721,897
Operating expenses |  |  |  |
General and administrative expenses |  | 14,946 | 29,888 | 32,854
Other operating expenses |  | 188,722 | 406,673 | 369,034
Total operating expenses | 231,158 |  |  |
Gain on sale of properties |  | 3,640 |  | 187,033
Operating income (loss) | (1,112) | 172,350 | (26,128) | 507,042
Other income (expense) |  |  |  |
Interest expense, net of capitalized interest |  | (2,285) | (6,774) | (5,019)
Other income (expense) | (42,449) | (65,435) | 7,765 | (82,888)
Income (loss) before income taxes | (43,561) | 104,630 | (25,137) | 419,135
Income tax benefit (expense) | 9,312 | (39,145) | 3,507 | (156,717)
Net income (loss) | (34,249) | 65,485 | (21,630) | 262,418
Intercompany Eliminations [Member] |  |  |  |
Other income (expense) |  |  |  |
Equity in earnings in subsidiaries | 34,249 | (65,485) | 21,630 | (262,418)
Income (loss) before income taxes | 34,249 | (65,485) | 21,630 | (262,418)
Net income (loss) | $ 34,249 | $ (65,485) | $ 21,630 | $ (262,418)

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