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