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Discontinued Operations - Reconciliation of Major Classes of Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] |  |  |  |
Cash and cash equivalents | $ 0 | $ 16,577 | $ 2,370 | $ 15,858
Discontinued Operations |  |  |  |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] |  |  |  |
Trade payables | 1,157 | 20,988 |  |
Unearned income |  | 269 |  |
Accrued liabilities and other | 228 | 36,898 |  |
Long-term debt, net |  | 638,631 |  |
Other liabilities |  | 37,253 |  |
Total liabilities associated with discontinued operations | 1,385 | 734,039 |  |
Cash and cash equivalents |  | 16,577 |  |
Trade receivables |  | 43,837 |  |
Inventories |  | 31,220 |  |
Other current assets |  | 5,231 |  |
Property, plant, and equipment |  | 551,401 |  |
Other assets |  | 61,740 |  |
Total assets associated with discontinued operations |  | 710,006 |  |
Compression | Discontinued Operations |  |  |  |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] |  |  |  |
Trade payables |  | 19,766 |  |
Unearned income |  | 269 |  |
Accrued liabilities and other |  | 36,318 |  |
Long-term debt, net |  | 638,631 |  |
Other liabilities |  | 37,253 |  |
Total liabilities associated with discontinued operations |  | 732,237 |  |
Cash and cash equivalents |  | 16,577 |  |
Trade receivables |  | 43,837 |  |
Inventories |  | 31,220 |  |
Other current assets |  | 5,231 |  |
Property, plant, and equipment |  | 551,401 |  |
Other assets |  | 61,740 |  |
Total assets associated with discontinued operations |  | 710,006 |  |
Offshore Services | Discontinued Operations |  |  |  |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] |  |  |  |
Trade payables | 1,157 | 1,222 |  |
Unearned income |  | 0 |  |
Accrued liabilities and other | 0 | 352 |  |
Long-term debt, net |  | 0 |  |
Other liabilities |  | 0 |  |
Total liabilities associated with discontinued operations | 1,157 | 1,574 |  |
Cash and cash equivalents |  | 0 |  |
Trade receivables |  | 0 |  |
Inventories |  | 0 |  |
Other current assets |  | 0 |  |
Property, plant, and equipment |  | 0 |  |
Other assets |  | 0 |  |
Total assets associated with discontinued operations |  | 0 |  |
Maritech | Discontinued Operations |  |  |  |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] |  |  |  |
Trade payables | 0 | 0 |  |
Unearned income |  | 0 |  |
Accrued liabilities and other | 228 | 228 |  |
Long-term debt, net |  | 0 |  |
Other liabilities |  | 0 |  |
Total liabilities associated with discontinued operations | $ 228 | 228 |  |
Cash and cash equivalents |  | 0 |  |
Trade receivables |  | 0 |  |
Inventories |  | 0 |  |
Other current assets |  | 0 |  |
Property, plant, and equipment |  | 0 |  |
Other assets |  | 0 |  |
Total assets associated with discontinued operations |  | $ 0 |  |

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