Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Total revenues	$ 321,497	$ 365,274
Costs and expenses:
Cost of revenues (exclusive of depreciation, depletion, amortization and accretion)	211,686	240,053
Depreciation, depletion, amortization and accretion	41,355	56,343
General and administrative expenses	65,157	71,112
Reduction in value of assets	16,522
Loss from operations	(13,223)	(2,234)
Other expense:
Interest expense, net	(25,134)	(25,121)
Other expense	(4,232)	(1,612)
Loss from continuing operations before income taxes	(42,589)	(28,967)
Income taxes	(10,254)	3,677
Net loss from continuing operations	(32,335)	(32,644)
Loss from discontinued operations, net of income tax	(47,129)	(15,061)
Net loss	$ (79,464)	$ (47,705)
Basic and diluted loss per share:
Net loss from continuing operations	$ (2.18)	$ (2.10)
Loss from discontinued operations	(3.18)	(0.97)
Net loss	$ (5.36)	$ (3.07)
Weighted average shares outstanding	14,809	15,578
Services [Member]
Revenues:
Total revenues	$ 180,236	$ 239,274
Costs and expenses:
Cost of revenues (exclusive of depreciation, depletion, amortization and accretion)	140,199	178,725
Depreciation, depletion, amortization and accretion	23,159	36,622
Rentals [Member]
Revenues:
Total revenues	100,105	91,036
Costs and expenses:
Cost of revenues (exclusive of depreciation, depletion, amortization and accretion)	40,043	41,687
Depreciation, depletion, amortization and accretion	12,820	15,663
Product Sales [Member]
Revenues:
Total revenues	41,156	34,964
Costs and expenses:
Cost of revenues (exclusive of depreciation, depletion, amortization and accretion)	31,444	19,641
Depreciation, depletion, amortization and accretion	$ 5,376	$ 4,058