Discontinued Operations - Schedule of Operating Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Statement Disclosures
Loss from discontinued operations	$ (3,797)	$ (8,452)
Balance Sheet Disclosures
Total assets held for sale	7,344		$ 4,383
Discontinued Operations
Income Statement Disclosures
Revenues	0	95
Costs of services	1,393	1,520
Selling, general and administrative	113	1,938
Asset impairment	2,842	2,333
Loss (gain) on disposal of assets	(551)	2,656
Total operating expenses	3,797	8,447
Operating loss	(3,797)	(8,352)
Interest expense	0	(100)
Loss from discontinued operations	(3,797)	(8,452)
Balance Sheet Disclosures
Property and equipment, net	3,194		1,523
Total assets held for sale	3,194		1,523
Real estate held for sale	0		4,802
Operating lease liabilities	422		508
Total liabilities related to assets held for sale	422		$ 508
Cash Flows from Discontinued Operations
Net cash provided (used) by operating activities	(1,506)	(3,467)
Net cash provided by investing activities	$ 0	$ 39,021