Parent, Guarantor, Non-Guarantor Unaudited Consolidating Financial Statements (Unaudited) - Consolidating Condensed Statement of Operations (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Income Statement [Abstract] | |||||||||||
| Revenues | $ 129,148,000 | $ 123,395,000 | $ 118,603,000 | $ 109,675,000 | $ 116,334,000 | $ 118,308,000 | $ 109,607,000 | $ 98,271,000 | $ 480,821,000 | $ 442,520,000 | $ 427,004,000 |
| Expenses: | |||||||||||
| Operating expenses | 378,104,000 | 355,487,000 | 362,521,000 | ||||||||
| Depreciation and amortization | 107,545,000 | 122,373,000 | 139,795,000 | ||||||||
| Total expenses | 485,649,000 | 477,860,000 | 502,316,000 | ||||||||
| Total operating gross margin (loss) | 3,815,000 | 1,932,000 | (167,000) | (10,408,000) | (4,700,000) | 121,000 | (11,016,000) | (19,745,000) | (4,828,000) | (35,340,000) | (75,312,000) |
| General and administration expense | (24,545,000) | (25,676,000) | (34,332,000) | ||||||||
| Loss on impairment | (50,698,000) | 0 | 0 | ||||||||
| Provision for reduction in carrying value of certain assets | 0 | (1,938,000) | 0 | ||||||||
| Gain (loss) on disposition of assets, net | (1,724,000) | (2,851,000) | (1,613,000) | ||||||||
| Pre-petition restructuring charges | (21,820,000) | 0 | 0 | ||||||||
| Reorganization items | (9,789,000) | 0 | |||||||||
| Total operating income (loss) | (31,661,000) | (56,544,000) | (8,933,000) | (16,266,000) | (14,221,000) | (6,815,000) | (17,632,000) | (27,137,000) | (113,404,000) | (65,805,000) | (111,257,000) |
| Other income (expense): | |||||||||||
| Interest expense | (42,565,000) | (44,226,000) | (45,812,000) | ||||||||
| Interest income | 91,000 | 244,000 | 58,000 | ||||||||
| Other | (2,023,000) | 126,000 | 367,000 | ||||||||
| Equity in net earnings of subsidiaries | 0 | 0 | 0 | ||||||||
| Total other income (expense) | (44,497,000) | (43,856,000) | (45,387,000) | ||||||||
| Income (loss) before income taxes | (157,901,000) | (109,661,000) | (156,644,000) | ||||||||
| Current tax expense | 8,225,000 | 9,264,000 | 5,108,000 | ||||||||
| Deferred tax expense (benefit) | (429,000) | (224,000) | 69,062,000 | ||||||||
| Total income tax expense (benefit) | 7,796,000 | 9,040,000 | 74,170,000 | ||||||||
| Net income (loss) | (43,073,000) | (70,951,000) | (22,877,000) | (28,796,000) | (28,693,000) | (20,311,000) | (29,888,000) | (39,809,000) | (165,697,000) | (118,701,000) | (230,814,000) |
| Less: Convertible preferred stock dividend | 2,719,000 | 3,051,000 | 0 | ||||||||
| Net income (loss) available to common stockholders | $ (43,073,000) | $ (71,857,000) | $ (23,784,000) | $ (29,702,000) | $ (29,599,000) | $ (21,217,000) | $ (31,127,000) | $ (39,809,000) | (168,416,000) | (121,752,000) | (230,814,000) |
| Reportable Legal Entities | Parent | |||||||||||
| Income Statement [Abstract] | |||||||||||
| Revenues | 0 | 0 | 0 | ||||||||
| Expenses: | |||||||||||
| Operating expenses | 0 | 0 | 0 | ||||||||
| Depreciation and amortization | 0 | 0 | 0 | ||||||||
| Total expenses | 0 | 0 | 0 | ||||||||
| Total operating gross margin (loss) | 0 | 0 | 0 | ||||||||
| General and administration expense | 23,568,000 | (323,000) | (410,000) | ||||||||
| Loss on impairment | 0 | ||||||||||
| Provision for reduction in carrying value of certain assets | 0 | ||||||||||
| Gain (loss) on disposition of assets, net | 0 | 0 | 0 | ||||||||
| Pre-petition restructuring charges | (21,820,000) | ||||||||||
| Reorganization items | (9,789,000) | ||||||||||
| Total operating income (loss) | (8,041,000) | (323,000) | (410,000) | ||||||||
| Other income (expense): | |||||||||||
| Interest expense | (45,696,000) | (47,135,000) | (48,160,000) | ||||||||
| Interest income | 572,000 | 831,000 | 758,000 | ||||||||
| Other | 0 | 0 | 0 | ||||||||
| Equity in net earnings of subsidiaries | (87,548,000) | (40,752,000) | (94,469,000) | ||||||||
| Total other income (expense) | (132,672,000) | (87,056,000) | (141,871,000) | ||||||||
| Income (loss) before income taxes | (140,713,000) | (87,379,000) | (142,281,000) | ||||||||
| Current tax expense | 11,758,000 | 26,537,000 | 40,562,000 | ||||||||
| Deferred tax expense (benefit) | 13,226,000 | 4,785,000 | 47,971,000 | ||||||||
| Total income tax expense (benefit) | 24,984,000 | 31,322,000 | 88,533,000 | ||||||||
| Net income (loss) | (165,697,000) | (118,701,000) | (230,814,000) | ||||||||
| Less: Convertible preferred stock dividend | 2,719,000 | 3,051,000 | 0 | ||||||||
| Net income (loss) available to common stockholders | (168,416,000) | (121,752,000) | (230,814,000) | ||||||||
| Reportable Legal Entities | Guarantor | |||||||||||
| Income Statement [Abstract] | |||||||||||
| Revenues | 204,319,000 | 167,675,000 | 151,100,000 | ||||||||
| Expenses: | |||||||||||
| Operating expenses | 115,291,000 | 93,834,000 | 100,751,000 | ||||||||
| Depreciation and amortization | 76,353,000 | 81,248,000 | 90,197,000 | ||||||||
| Total expenses | 191,644,000 | 175,082,000 | 190,948,000 | ||||||||
| Total operating gross margin (loss) | 12,675,000 | (7,407,000) | (39,848,000) | ||||||||
| General and administration expense | (47,819,000) | (24,887,000) | (29,356,000) | ||||||||
| Loss on impairment | (40,917,000) | ||||||||||
| Provision for reduction in carrying value of certain assets | 0 | ||||||||||
| Gain (loss) on disposition of assets, net | (1,347,000) | (243,000) | (565,000) | ||||||||
| Pre-petition restructuring charges | 0 | ||||||||||
| Reorganization items | 0 | ||||||||||
| Total operating income (loss) | (77,408,000) | (32,537,000) | (69,769,000) | ||||||||
| Other income (expense): | |||||||||||
| Interest expense | 67,000 | (220,000) | (642,000) | ||||||||
| Interest income | 721,000 | 744,000 | 695,000 | ||||||||
| Other | 6,000 | 71,000 | 483,000 | ||||||||
| Equity in net earnings of subsidiaries | 0 | 0 | 0 | ||||||||
| Total other income (expense) | 794,000 | 595,000 | 536,000 | ||||||||
| Income (loss) before income taxes | (76,614,000) | (31,942,000) | (69,233,000) | ||||||||
| Current tax expense | (10,241,000) | (22,524,000) | (35,251,000) | ||||||||
| Deferred tax expense (benefit) | (11,865,000) | (7,763,000) | 14,940,000 | ||||||||
| Total income tax expense (benefit) | (22,106,000) | (30,287,000) | (20,311,000) | ||||||||
| Net income (loss) | (54,508,000) | (1,655,000) | (48,922,000) | ||||||||
| Less: Convertible preferred stock dividend | 0 | 0 | 0 | ||||||||
| Net income (loss) available to common stockholders | (54,508,000) | (1,655,000) | (48,922,000) | ||||||||
| Reportable Legal Entities | Non-Guarantor | |||||||||||
| Income Statement [Abstract] | |||||||||||
| Revenues | 327,266,000 | 355,859,000 | 382,094,000 | ||||||||
| Expenses: | |||||||||||
| Operating expenses | 313,577,000 | 342,667,000 | 367,960,000 | ||||||||
| Depreciation and amortization | 31,192,000 | 41,125,000 | 49,598,000 | ||||||||
| Total expenses | 344,769,000 | 383,792,000 | 417,558,000 | ||||||||
| Total operating gross margin (loss) | (17,503,000) | (27,933,000) | (35,464,000) | ||||||||
| General and administration expense | (294,000) | (466,000) | (4,566,000) | ||||||||
| Loss on impairment | (9,781,000) | ||||||||||
| Provision for reduction in carrying value of certain assets | (1,938,000) | ||||||||||
| Gain (loss) on disposition of assets, net | (377,000) | (2,608,000) | (1,048,000) | ||||||||
| Pre-petition restructuring charges | 0 | ||||||||||
| Reorganization items | 0 | ||||||||||
| Total operating income (loss) | (27,955,000) | (32,945,000) | (41,078,000) | ||||||||
| Other income (expense): | |||||||||||
| Interest expense | (9,214,000) | (7,906,000) | (6,434,000) | ||||||||
| Interest income | 11,076,000 | 9,704,000 | 8,029,000 | ||||||||
| Other | (2,029,000) | 55,000 | (116,000) | ||||||||
| Equity in net earnings of subsidiaries | 0 | 0 | 0 | ||||||||
| Total other income (expense) | (167,000) | 1,853,000 | 1,479,000 | ||||||||
| Income (loss) before income taxes | (28,122,000) | (31,092,000) | (39,599,000) | ||||||||
| Current tax expense | 6,708,000 | 5,251,000 | (203,000) | ||||||||
| Deferred tax expense (benefit) | (1,790,000) | 2,754,000 | 6,151,000 | ||||||||
| Total income tax expense (benefit) | 4,918,000 | 8,005,000 | 5,948,000 | ||||||||
| Net income (loss) | (33,040,000) | (39,097,000) | (45,547,000) | ||||||||
| Less: Convertible preferred stock dividend | 0 | 0 | 0 | ||||||||
| Net income (loss) available to common stockholders | (33,040,000) | (39,097,000) | (45,547,000) | ||||||||
| Eliminations | |||||||||||
| Income Statement [Abstract] | |||||||||||
| Revenues | (50,764,000) | (81,014,000) | (106,190,000) | ||||||||
| Expenses: | |||||||||||
| Operating expenses | (50,764,000) | (81,014,000) | (106,190,000) | ||||||||
| Depreciation and amortization | 0 | 0 | 0 | ||||||||
| Total expenses | (50,764,000) | (81,014,000) | (106,190,000) | ||||||||
| Total operating gross margin (loss) | 0 | 0 | 0 | ||||||||
| General and administration expense | 0 | 0 | 0 | ||||||||
| Loss on impairment | 0 | ||||||||||
| Provision for reduction in carrying value of certain assets | 0 | ||||||||||
| Gain (loss) on disposition of assets, net | 0 | 0 | 0 | ||||||||
| Pre-petition restructuring charges | 0 | ||||||||||
| Reorganization items | 0 | ||||||||||
| Total operating income (loss) | 0 | 0 | 0 | ||||||||
| Other income (expense): | |||||||||||
| Interest expense | 12,278,000 | 11,035,000 | 9,424,000 | ||||||||
| Interest income | (12,278,000) | (11,035,000) | (9,424,000) | ||||||||
| Other | 0 | 0 | 0 | ||||||||
| Equity in net earnings of subsidiaries | 87,548,000 | 40,752,000 | 94,469,000 | ||||||||
| Total other income (expense) | 87,548,000 | 40,752,000 | 94,469,000 | ||||||||
| Income (loss) before income taxes | 87,548,000 | 40,752,000 | 94,469,000 | ||||||||
| Current tax expense | 0 | 0 | 0 | ||||||||
| Deferred tax expense (benefit) | 0 | 0 | 0 | ||||||||
| Total income tax expense (benefit) | 0 | 0 | 0 | ||||||||
| Net income (loss) | 87,548,000 | 40,752,000 | 94,469,000 | ||||||||
| Less: Convertible preferred stock dividend | 0 | 0 | 0 | ||||||||
| Net income (loss) available to common stockholders | $ 87,548,000 | $ 40,752,000 | $ 94,469,000 | ||||||||