Amount of capital expenditure attributable to discontinued operations.

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Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment expense - Disc Ops		$ 100,000	$ 0
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital expenditures from Disc Ops		$ (12,000)	$ (44,000)
AMECO \| Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment expense - Disc Ops	$ 100,000
Impairment of goodwill	$ 12,000