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Discontinued Operations - Cash Flows information Related to Discontinued Operations (Details) - Discontinued Operations - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Capital expenditures | $ (21,425) | $ (35,182)
Stork |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Capital expenditures | (10,413) | (16,410)
AMECO |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Capital expenditures | $ (11,012) | $ (18,772)

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