Quarterly report [Sections 13 or 15(d)]

SEGMENT AND GEOGRAPHIC AREA INFORMATION - Schedule of Operating Performance (Details)

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SEGMENT AND GEOGRAPHIC AREA INFORMATION - Schedule of Operating Performance (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]    
Revenues $ 350,530 $ 337,094
Less:    
Personnel 87,311 84,198
Repairs and maintenance 61,315 65,723
Insurance 6,834 6,651
Fuel 18,875 21,634
Leased-in equipment 26,049 26,239
Other segment costs 56,801 50,610
Total operating expenses 257,185 255,055
General and administrative expenses 43,100 43,347
Depreciation and amortization expense 16,841 17,169
Total costs and expenses 317,126 315,571
Losses on disposal of assets (558) (113)
Earnings from unconsolidated affiliates 702 1,419
Operating income (loss) 33,548 22,829
Offshore Energy Services    
Segment Reporting Information [Line Items]    
Revenues 239,785 229,895
Less:    
Personnel 56,766 56,277
Repairs and maintenance 46,907 50,810
Insurance 4,029 4,389
Fuel 12,702 15,280
Leased-in equipment 14,933 15,554
Other segment costs 37,656 36,171
Total operating expenses 172,993 178,481
General and administrative expenses 23,259 24,412
Depreciation and amortization expense 6,870 7,222
Total costs and expenses 203,122 210,115
Losses on disposal of assets 0 0
Earnings from unconsolidated affiliates 702 1,419
Operating income (loss) 37,365 21,199
Government services    
Segment Reporting Information [Line Items]    
Revenues 85,943 82,172
Less:    
Personnel 24,473 21,576
Repairs and maintenance 11,361 12,204
Insurance 2,437 1,981
Fuel 2,082 2,103
Leased-in equipment 9,693 9,505
Other segment costs 12,871 9,811
Total operating expenses 62,917 57,180
General and administrative expenses 9,729 8,884
Depreciation and amortization expense 7,286 6,818
Total costs and expenses 79,932 72,882
Losses on disposal of assets 0 0
Earnings from unconsolidated affiliates 0 0
Operating income (loss) 6,011 9,290
Other Services    
Segment Reporting Information [Line Items]    
Revenues 24,802 25,027
Less:    
Personnel 6,072 6,345
Repairs and maintenance 3,047 2,709
Insurance 368 281
Fuel 4,091 4,251
Leased-in equipment 1,423 1,180
Other segment costs 6,274 4,628
Total operating expenses 21,275 19,394
General and administrative expenses 1,595 1,890
Depreciation and amortization expense 2,554 2,865
Total costs and expenses 25,424 24,149
Losses on disposal of assets 0 0
Earnings from unconsolidated affiliates 0 0
Operating income (loss) (622) 878
Corporate    
Segment Reporting Information [Line Items]    
Revenues 0 0
Less:    
Personnel 0 0
Repairs and maintenance 0 0
Insurance 0 0
Fuel 0 0
Leased-in equipment 0 0
Other segment costs 0 0
Total operating expenses 0 0
General and administrative expenses 8,517 8,161
Depreciation and amortization expense 131 264
Total costs and expenses 8,648 8,425
Losses on disposal of assets (558) (113)
Earnings from unconsolidated affiliates 0 0
Operating income (loss) $ (9,206) $ (8,538)