CONDENSED CONSOLIDATING FINANCIAL STATEMENTS - Condensed Consolidating Unaudited Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	$ 107,780	$ 95,012	$ 209,232	$ 206,100
Direct operating expense	63,560	89,419	150,866	180,017
Depreciation and amortization expense	20,910	35,856	42,211	71,608
General and administrative expense	30,334	40,903	61,330	87,148
Impairment expense	0	0	187	0
Operating loss	(7,024)	(71,166)	(45,362)	(132,673)
Interest expense, net of amounts capitalized	7,872	21,357	15,582	42,941
Other expense (income), net	(961)	412	(1,201)	(819)
Loss before income taxes	(14,036)	(92,935)	(61,184)	(174,795)
Income tax expense (benefit)	853	133	1,142	379
Net loss	$ 13,183	92,802	$ 60,042	174,416
Parent Company
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES		0		0
Direct operating expense		0		0
Depreciation and amortization expense		0		0
General and administrative expense		205		398
Operating loss		(205)		(398)
Interest expense, net of amounts capitalized		21,357		42,941
Other expense (income), net		(645)		(1,290)
Loss before income taxes		(20,917)		(42,049)
Income tax expense (benefit)		(6)		(12)
Net loss		20,923		42,061
Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES		92,122		199,594
Direct operating expense		86,419		173,226
Depreciation and amortization expense		34,676		69,210
General and administrative expense		38,091		81,689
Operating loss		(67,064)		(124,531)
Interest expense, net of amounts capitalized		0		0
Other expense (income), net		49		(94)
Loss before income taxes		(67,113)		(124,437)
Income tax expense (benefit)		0		0
Net loss		67,113		124,437
Non-Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES		3,000		6,756
Direct operating expense		3,102		7,025
Depreciation and amortization expense		1,180		2,398
General and administrative expense		2,607		5,061
Operating loss		(3,889)		(7,728)
Interest expense, net of amounts capitalized		0		0
Other expense (income), net		890		332
Loss before income taxes		(4,779)		(8,060)
Income tax expense (benefit)		139		391
Net loss		4,640		7,669
Eliminations
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES		(110)		(250)
Direct operating expense		(102)		(234)
Depreciation and amortization expense		0		0
General and administrative expense		0		0
Operating loss		(8)		(16)
Interest expense, net of amounts capitalized		0		0
Other expense (income), net		118		233
Loss before income taxes		(126)		(249)
Income tax expense (benefit)		0		0
Net loss		$ 126		$ 249