Guarantor/Non Guarantor Condensed Consolidated Financial Statements (Statements of Operations (Unaudited)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 107,130	$ 62,290	$ 202,887	$ 137,242
Costs and expenses:
Operating Costs	79,081	43,515	151,829	95,804
Depreciation and amortization	24,740	28,922	49,732	58,746
General and administrative	16,090	15,258	33,814	31,766
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	(226)	112	(589)	57
Impairment charges	795	0	795	0
Loss (gain) on dispositions of property and equipment, net	(621)	508	(1,092)	(92)
Total costs and expenses	119,859	88,315	234,489	186,281
Income (loss) from operations	(12,729)	(26,025)	(31,602)	(49,039)
Other (expense) income:
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(6,418)	(6,375)	(12,477)	(12,629)
Loss on extinguishment of debt	0	299	0	299
Other	73	718	(71)	329
Total other income (expense)	(6,345)	(5,956)	(12,548)	(12,599)
Income (loss) before income taxes	(19,074)	(31,981)	(44,150)	(61,638)
Income tax (expense) benefit	(1,135)	1,990	(1,183)	3,948
Net income (loss)	(20,209)	(29,991)	(45,333)	(57,690)
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses:
Operating Costs	0	0	0	0
Depreciation and amortization	0	0	0	0
General and administrative	(138)	(138)	(276)	(276)
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0		0
Loss (gain) on dispositions of property and equipment, net	0	0	0	0
Total costs and expenses	(138)	(138)	(276)	(276)
Income (loss) from operations	138	138	276	276
Other (expense) income:
Equity in earnings of subsidiaries	7,166	22,554	16,399	43,817
Interest expense	0	0	0	0
Loss on extinguishment of debt		0		0
Other	(138)	(138)	(276)	(276)
Total other income (expense)	7,028	22,416	16,123	43,541
Income (loss) before income taxes	7,166	22,554	16,399	43,817
Income tax (expense) benefit	0	0	0	0
Net income (loss)	7,166	22,554	16,399	43,817
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	98,824	62,029	183,910	135,885
Costs and expenses:
Operating Costs	73,114	42,395	138,269	92,705
Depreciation and amortization	23,076	26,867	46,145	54,598
General and administrative	10,811	9,496	22,394	20,044
Intercompany leasing	(1,215)	(1,215)	(2,430)	(2,430)
Bad debt expense (recovery)	(226)	112	(589)	57
Impairment charges	795		795
Loss (gain) on dispositions of property and equipment, net	(511)	514	(967)	(41)
Total costs and expenses	105,844	78,169	203,617	164,933
Income (loss) from operations	(7,020)	(16,140)	(19,707)	(29,048)
Other (expense) income:
Equity in earnings of subsidiaries	(883)	(4,344)	(1,531)	(9,190)
Interest expense	62	(52)	19	(74)
Loss on extinguishment of debt		0		0
Other	245	685	458	1,005
Total other income (expense)	(576)	(3,711)	(1,054)	(8,259)
Income (loss) before income taxes	(7,596)	(19,851)	(20,761)	(37,307)
Income tax (expense) benefit	1,313	1,641	5,893	2,680
Net income (loss)	(6,283)	(18,210)	(14,868)	(34,627)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	8,306	261	18,977	1,357
Costs and expenses:
Operating Costs	5,967	1,120	13,560	3,099
Depreciation and amortization	1,357	1,730	2,979	3,491
General and administrative	476	507	926	720
Intercompany leasing	1,215	1,215	2,430	2,430
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0		0
Loss (gain) on dispositions of property and equipment, net	(112)	(6)	(127)	(51)
Total costs and expenses	8,903	4,566	19,768	9,689
Income (loss) from operations	(597)	(4,305)	(791)	(8,332)
Other (expense) income:
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	0	2	0	4
Loss on extinguishment of debt		0		0
Other	(46)	166	(281)	(398)
Total other income (expense)	(46)	168	(281)	(394)
Income (loss) before income taxes	(643)	(4,137)	(1,072)	(8,726)
Income tax (expense) benefit	(240)	(207)	(459)	(464)
Net income (loss)	(883)	(4,344)	(1,531)	(9,190)
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses:
Operating Costs	0	0	0	0
Depreciation and amortization	307	325	608	657
General and administrative	4,941	5,393	10,770	11,278
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0		0
Loss (gain) on dispositions of property and equipment, net	2	0	2	0
Total costs and expenses	5,250	5,718	11,380	11,935
Income (loss) from operations	(5,250)	(5,718)	(11,380)	(11,935)
Other (expense) income:
Equity in earnings of subsidiaries	(6,283)	(18,210)	(14,868)	(34,627)
Interest expense	(6,480)	(6,325)	(12,496)	(12,559)
Loss on extinguishment of debt		299		299
Other	12	5	28	(2)
Total other income (expense)	(12,751)	(24,829)	(27,336)	(47,487)
Income (loss) before income taxes	(18,001)	(30,547)	(38,716)	(59,422)
Income tax (expense) benefit	(2,208)	556	(6,617)	1,732
Net income (loss)	$ (20,209)	$ (29,991)	$ (45,333)	$ (57,690)