Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Depreciation and amortization	$ 52,537	$ 114,657
Goodwill and other long-lived asset impairments	112,164	35,801
Acquisition related costs	21,635	0
Loss (gain) on disposal of assets	(3,503)	4,013
Nonoperating Income (Expense) [Abstract]
Gain on derivative	4,866	0
Loss from continuing operations before income taxes	(253,040)	(91,380)
Income tax (benefit) expense	(3,832)	21
Loss from continuing operations	(249,208)	(91,401)
Loss from discontinued operations	(18,967)	(90,497)
Net loss	$ (268,175)	$ (181,898)
Earnings Per Share [Abstract]
Loss from continuing operations per share, basic and diluted (in dollars per share)	$ (10.00)	$ (3.50)
Loss from discontinued operations per share, basic and diluted (in dollars per share)	(0.76)	(3.46)
Net loss per share, basic and diluted (in dollars per share)	$ (10.76)	$ (6.96)
Continuing Operations
Revenues	$ 411,375	$ 567,250
Costs of services, excluding depreciation and amortization	338,067	421,549
Selling, general and administrative	98,048	115,464
Depreciation and amortization	52,537	69,489
Goodwill and other long-lived asset impairments	118,152	8,262
Acquisition related costs	21,635	0
Loss (gain) on disposal of assets	(6,138)	2,135
Total operating expenses	622,301	616,899
Operating loss	(210,926)	(49,649)
Nonoperating Income (Expense) [Abstract]
Interest expense, net	(46,980)	(42,378)
Gain on derivative	4,866	0
Other income	$ 0	$ 647