Guarantor/Non Guarantor Condensed Consolidating Financial Statements (Statements of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 575,792	$ 590,097
Costs and expenses:
Operating costs	431,353	429,913
Depreciation	90,884	93,554
General and administrative	91,185	74,117
Bad debt expense	(79)	271
Impairment	2,667	4,422
Gain (loss) on dispositions of property and equipment, net	4,513	3,121
Intercompany leasing	0	0
Total costs and expenses	611,497	599,156
Income (loss) from operations	(35,705)	(9,059)
Other income (expense):
Equity in earnings of subsidiaries	0	0
Interest expense, net of interest capitalized	(39,835)	(38,782)
Other income, net	2,307	738
Total other income (expense), net	(37,528)	(38,044)
Income (loss) before income taxes	(73,233)	(47,103)
Income tax (expense) benefit	9,329	(1,908)
Net income (loss)	(63,904)	(49,011)
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0
Costs and expenses:
Operating costs	0	0
Depreciation	0	0
General and administrative	(540)	(420)
Bad debt expense	0	0
Impairment	0	0
Gain (loss) on dispositions of property and equipment, net	0	0
Intercompany leasing	0	0
Total costs and expenses	(540)	(420)
Income (loss) from operations	540	420
Other income (expense):
Equity in earnings of subsidiaries	(41,192)	(14,635)
Interest expense, net of interest capitalized	0	0
Other income, net	(540)	(420)
Total other income (expense), net	(41,732)	(15,055)
Income (loss) before income taxes	(41,192)	(14,635)
Income tax (expense) benefit	0	0
Net income (loss)	(41,192)	(14,635)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	486,860	505,936
Costs and expenses:
Operating costs	366,352	365,848
Depreciation	84,275	86,799
General and administrative	45,451	49,231
Bad debt expense	(79)	271
Impairment	2,667	4,422
Gain (loss) on dispositions of property and equipment, net	3,752	3,068
Intercompany leasing	(4,860)	(4,860)
Total costs and expenses	490,054	498,643
Income (loss) from operations	(3,194)	7,293
Other income (expense):
Equity in earnings of subsidiaries	23,008	5,669
Interest expense, net of interest capitalized	13	(16)
Other income, net	1,311	867
Total other income (expense), net	24,332	6,520
Income (loss) before income taxes	21,138	13,813
Income tax (expense) benefit	(2,954)	(4,847)
Net income (loss)	18,184	8,966
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	88,932	84,161
Costs and expenses:
Operating costs	65,001	64,065
Depreciation	5,665	5,628
General and administrative	2,898	2,800
Bad debt expense	0	0
Impairment	0	0
Gain (loss) on dispositions of property and equipment, net	764	54
Intercompany leasing	4,860	4,860
Total costs and expenses	77,660	77,299
Income (loss) from operations	11,272	6,862
Other income (expense):
Equity in earnings of subsidiaries	0	0
Interest expense, net of interest capitalized	(32)	(1)
Other income, net	1,085	(287)
Total other income (expense), net	1,053	(288)
Income (loss) before income taxes	12,325	6,574
Income tax (expense) benefit	10,683	(905)
Net income (loss)	23,008	5,669
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0
Costs and expenses:
Operating costs	0	0
Depreciation	944	1,127
General and administrative	43,376	22,506
Bad debt expense	0	0
Impairment	0	0
Gain (loss) on dispositions of property and equipment, net	(3)	(1)
Intercompany leasing	0	0
Total costs and expenses	44,323	23,634
Income (loss) from operations	(44,323)	(23,634)
Other income (expense):
Equity in earnings of subsidiaries	18,184	8,966
Interest expense, net of interest capitalized	(39,816)	(38,765)
Other income, net	451	578
Total other income (expense), net	(21,181)	(29,221)
Income (loss) before income taxes	(65,504)	(52,855)
Income tax (expense) benefit	1,600	3,844
Net income (loss)	$ (63,904)	$ (49,011)