Quarterly report [Sections 13 or 15(d)]

SEGMENTS - Schedule of Capital expenditures by segment And Long lived assets by operating segments (Details)

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SEGMENTS - Schedule of Capital expenditures by segment And Long lived assets by operating segments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]      
Total capital expenditures $ 41,314 $ 52,060  
Total long-lived assets 1,393,060   $ 1,394,334
Construction-in-progress      
Segment Reporting Information [Line Items]      
Total long-lived assets 134,019   144,587
Total Segment      
Segment Reporting Information [Line Items]      
Total long-lived assets 1,257,289   1,247,689
Offshore Energy Services      
Segment Reporting Information [Line Items]      
Total capital expenditures 31,961 22,695  
Total long-lived assets 561,525   567,284
Government Services      
Segment Reporting Information [Line Items]      
Total capital expenditures 7,288 28,486  
Total long-lived assets 637,187   620,820
Other Services      
Segment Reporting Information [Line Items]      
Total capital expenditures 2,065 $ 879  
Total long-lived assets 58,577   59,585
Corporate      
Segment Reporting Information [Line Items]      
Total long-lived assets $ 1,752   $ 2,058