Discontinued Operations - Presented Separately in the Statement of Financial Position (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade payables	$ 319	$ 319
Accrued liabilities and other	95	601
Total liabilities associated with discontinued operations	414	920
Offshore Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade payables	319	319
Accrued liabilities and other	0	506
Total liabilities associated with discontinued operations	319	825
Maritech
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade payables	0	0
Accrued liabilities and other	95	95
Total liabilities associated with discontinued operations	$ 95	$ 95