Annual report [Section 13 and 15(d), not S-K Item 405]

SEGMENT AND GEOGRAPHIC AREA INFORMATION - Schedule Of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details)

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SEGMENT AND GEOGRAPHIC AREA INFORMATION - Schedule Of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Total operating income $ 158,806 $ 132,608 $ 60,751
Interest income 9,354 8,901 8,646
Interest expense, net (39,918) (37,581) (41,417)
Other, net 22,994 (1,865) (9,968)
Total other income (expense), net (7,570) (30,545) (42,739)
Income before income taxes 151,236 102,063 18,012
Offshore Energy Services      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Total operating income 165,582 132,165 45,613
Government Services      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Total operating income 5,078 21,070 29,610
Other Services      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Total operating income 9,814 13,747 15,398
Corporate      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Total operating income $ (21,668) $ (34,374) $ (29,870)