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Discontinued Operations - Income Statement Data for Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of operating results of discontinued operations
Loss from discontinued operations, net of tax		$ (273)
Spinoff | Exterran Corporation
Summary of operating results of discontinued operations
Other (income) expense, net	$ 640	(1,473)	$ (654)
Provision for (benefit from) income taxes	$ (640)	1,746	$ 654
Loss from discontinued operations, net of tax		$ (273)

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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