Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	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	595		601
Total liabilities associated with discontinued operations	914		920
Deferred revenue, revenue recognized	700	$ 300
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	500		506
Total liabilities associated with discontinued operations	819		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