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Assets Held for Sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Assets:
Total assets held for sale, net	$ 21,628	$ 0
Held-for-sale | Well Services Exit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale	4,400
Assets:
Inventory	3,124
Other property and equipment	95,560
Less: Accumulated depreciation and impairment	(77,056)
Total assets held for sale, net	$ 21,628

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