Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
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 (recovery), net	(79)	271
Impairment	2,667	4,422
Gain on dispositions of property and equipment, net	(4,513)	(3,121)
Total costs and expenses	611,497	599,156
Loss from operations	(35,705)	(9,059)
Other income (expense):
Interest expense, net of interest capitalized	(39,835)	(38,782)
Other income, net	2,307	738
Total other expense, net	(37,528)	(38,044)
Loss before income taxes	(73,233)	(47,103)
Income tax (expense) benefit	9,329	(1,908)
Net loss	$ (63,904)	$ (49,011)
Loss per common share - Basic	$ (0.81)	$ (0.63)
Loss per common share - Diluted	$ (0.81)	$ (0.63)
Weighted average number of shares outstanding - Basic	78,423	77,957
Weighted average number of shares outstanding - Diluted	78,423	77,957