Segment Information (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended		4 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	May 31, 2020	Sep. 30, 2019
Segment Reporting [Abstract]
Consolidated Gross Margin	$ 10,105	$ 38,339	$ 12,525	$ 28,323	$ 113,195
Depreciation and amortization	(14,699)	(22,924)	(19,935)	(35,647)	(68,428)
General and administrative	(11,626)	(30,485)	(15,839)	(22,047)	(68,271)
Pre-petition restructuring charges			0	(16,822)	0
Impairment			(388)	(17,853)	(1,378)
Bad debt (expense) recovery, net	315	(196)	598	(1,209)	90
Gain on dispositions of property and equipment, net	(3,829)	17	(4,289)	(989)	(2,184)
Loss from operations	$ (12,076)	$ (15,283)	$ (18,750)	$ (64,266)	$ (22,608)