Quarterly report [Sections 13 or 15(d)]

SEGMENTS - Depreciation And Amortization Expense By Operating Segment (Details)

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SEGMENTS - Depreciation And Amortization Expense By Operating Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Depreciation and amortization expense $ 17,312 $ 16,848 $ 34,153 $ 34,017
PBH amortization 3,587 3,725 6,993 7,451
Total depreciation and amortization expense 20,899 20,573 41,146 41,468
Offshore Energy Services        
Segment Reporting Information [Line Items]        
Depreciation and amortization expense 6,924 7,046 13,794 14,268
PBH amortization 3,069 3,072 5,949 6,149
Total depreciation and amortization expense 9,993 10,118 19,743 20,417
Government Services        
Segment Reporting Information [Line Items]        
Depreciation and amortization expense 7,496 6,848 14,782 13,666
PBH amortization 452 507 874 1,008
Total depreciation and amortization expense 7,948 7,355 15,656 14,674
Other Services        
Segment Reporting Information [Line Items]        
Depreciation and amortization expense 2,679 2,737 5,233 5,602
PBH amortization 66 146 170 294
Total depreciation and amortization expense 2,745 2,883 5,403 5,896
Corporate        
Segment Reporting Information [Line Items]        
Depreciation and amortization expense 213 217 344 481
PBH amortization 0 0 0 0
Total depreciation and amortization expense $ 213 $ 217 $ 344 $ 481