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

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