Major Customers and Segment Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Customer	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Revenue from contract with customer, including assessed tax	$ 170,941	$ 141,837	$ 174,453
Income (loss) from equity method investments	15,078	(8,163)	(14,459)
Customer Concentration Risk | Sales Revenue, Net | Seacor Marine Arabia LLC
Segment Reporting Information [Line Items]
Revenue from contract with customer, including assessed tax	$ 29,700	$ 30,700	$ 30,800
Concentration risk, percentage	17.00%	21.00%	17.00%
Customer Concentration Risk | Sales Revenue, Net | Ten Largest Customers
Segment Reporting Information [Line Items]
Concentration risk, percentage	76.00%	76.00%	61.00%
Geographic Concentration Risk | Sales Revenue, Net
Segment Reporting Information [Line Items]
Number of customer | Customer	10
Geographic Concentration Risk | Sales Revenue, Net | Non-US
Segment Reporting Information [Line Items]
Income (loss) from equity method investments	$ 15,400	$ (7,500)	$ (13,500)
Geographic Concentration Risk | Sales Revenue, Net | Zamil Offshore
Segment Reporting Information [Line Items]
Revenue from contract with customer, including assessed tax			$ 20,300
Concentration risk, percentage			11.00%
Geographic Concentration Risk | Sales Revenue, Net | Exxon Mobil
Segment Reporting Information [Line Items]
Revenue from contract with customer, including assessed tax	$ 35,200	$ 24,800	$ 16,500
Concentration risk, percentage	21.00%	17.00%	9.00%
Geographic Concentration Risk | Sales Revenue, Net | Saudi Aramco
Segment Reporting Information [Line Items]
Revenue from contract with customer, including assessed tax			$ 10,500
Concentration risk, percentage			6.00%
Geographic Concentration Risk | Stockholders' Equity | Non-US
Segment Reporting Information [Line Items]
Concentration risk, percentage	88.00%	89.00%	75.00%