Fair Value Measurements - Additional Information (Details)		12 Months Ended
		Dec. 31, 2021 USD ($) PropertyandEquipment Investment	Dec. 31, 2020 USD ($) Liftboat Investment
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impairment charges		$ 0	$ 18,800,000
Number of property and equipment with fair value | PropertyandEquipment		0
Number of marked investments, at equity, in 50% or less owned companies | Investment		1	2
Investments, at equity, in 50% or less owned companies		$ 71,727,000	$ 75,308,000
Seabulk Tims I and Offshore Vessel Holdings
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments, at equity, in 50% or less owned companies			0
MEXMAR Offshore
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments, at equity, in 50% or less owned companies	[1]		$ 1,960,000
50% or Less Owned Companies | MEXMAR Offshore
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments, at equity, in 50% or less owned companies		0
Investment owned, at fair value, in 50% or less owned company		12,000,000.0
Investment owned excess amount fair value, in 50% or less owned company		9,400,000
Investment owned, balance, in 50% or less owned company		$ 2,600,000
Liftboats
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Number of property and equipment with fair value | Liftboat			5
Fair Value, Inputs, Level 2 | Liftboats
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Property and equipment, fair value			$ 43,000,000.0

[1] ^{This joint venture holds the investment in UP Offshore. The Company received a cash distribution in excess of its investment in MEXMOR Offshore during 2021. The distribution exceeded the investment value by $9.4 million and this amount was recognized as gain from return of investments in 50% or less owned companies. On December 9, 2021, the Company sold their ownership in this joint venture to the majority shareholder. See details below.}