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Commitment and Contingencies (Details) - USD ($) | Jan. 15, 2020 | Mar. 31, 2021 | Aug. 31, 2019 | Mar. 01, 2018
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Long-term Purchase Commitment [Line Items] |  |  |  |
Discontinued operation, amounts of material contingent liabilities remaining, performance bonds |  | $ 46,800,000 |  |
Damages Awarded | $ 7,900,000 |  |  |
Within 90 Days Following Bonding Agreement Closing [Member] |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Discontinued operation, amounts of material contingent liabilities remaining, performance bonds |  | 47,000,000.0 |  |
Within 180 Days Following Bonding Agreement Closing [Member] |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Discontinued operation, amounts of material contingent liabilities remaining, performance bonds |  | $ 47,000,000.0 |  |
Offshore Division | Discontinued Operations, Disposed of by Sale |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, Additional Receivable |  |  |  | $ 7,500,000
Disposal Group, Including Discontinued Operation, Reserve, Other Receivables |  |  | $ 1,500,000 |

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