SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Condensed Consolidating Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements Captions [Line Items]
Total revenues	$ 66,407	$ 73,151	$ 78,495	$ 71,469	$ 83,425	$ 73,185	$ 81,571	$ 77,945	$ 289,522	$ 316,126
Total costs and expenses									(348,157)	(348,516)
Other losses, net									(8,106)	(11,504)
Interest expense									(48,519)	(30,602)
Loss on debt extinguishment									(8,478)
Loss from operations before income taxes									(123,738)	(74,496)
Income tax (expense) benefit									(28,204)	1,797
Net loss	$ (52,358)	$ (42,652)	$ (34,398)	$ (22,534)	$ (20,534)	$ (17,225)	$ (17,017)	$ (17,923)	(151,942)	(72,699)
Parent
Condensed Financial Statements Captions [Line Items]
Net loss from equity investment in subsidiaries									(151,942)	(63,084)
Interest expense										(5,434)
Loss from operations before income taxes									(151,942)	(68,518)
Net loss									(151,942)	(68,518)
Partnership
Condensed Financial Statements Captions [Line Items]
Net loss from equity investment in subsidiaries									(125,840)
Interest expense									(25,164)
Loss on debt extinguishment									(938)
Loss from operations before income taxes									(151,942)
Net loss									(151,942)
CFS West Virginia
Condensed Financial Statements Captions [Line Items]
Total revenues									5,041	6,382
Total costs and expenses									(15,181)	(13,666)
Other losses, net									(46)	(445)
Net loss from equity investment in subsidiaries									(120,653)	(54,573)
Interest expense									(10,505)	(8,348)
Loss on debt extinguishment									(1,441)
Loss from operations before income taxes									(142,785)	(70,650)
Net loss									(142,785)	(70,650)
Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Total revenues									242,339	266,550
Total costs and expenses									(285,292)	(285,578)
Other losses, net									(5,761)	(9,510)
Interest expense									(11,726)	(15,787)
Loss on debt extinguishment									(6,099)
Loss from operations before income taxes									(66,539)	(44,325)
Income tax (expense) benefit									(28,204)	1,797
Net loss									(94,743)	(42,528)
Non-Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Total revenues									49,068	52,271
Total costs and expenses									(54,610)	(58,349)
Other losses, net									(2,299)	(1,549)
Interest expense									(1,124)	(1,033)
Loss from operations before income taxes									(8,965)	(8,660)
Net loss									(8,965)	(8,660)
Eliminations
Condensed Financial Statements Captions [Line Items]
Total revenues									(6,926)	(9,077)
Total costs and expenses									6,926	9,077
Net loss from equity investment in subsidiaries									398,435	117,657
Loss from operations before income taxes									398,435	117,657
Net loss									$ 398,435	$ 117,657