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Discontinued Operations - Reconciliation of Pretax Loss to After-Tax Loss from Discontinued Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]      
Income (loss) from discontinued operations, net of taxes $ (5,340) $ 278 $ 195
Discontinued Operations      
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]      
General and administrative expense     31
Other income, net     (226)
Pretax income (loss) from discontinued operations     195
Income (loss) from discontinued operations, net of taxes     195
Discontinued Operations | Maritech      
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]      
Cost of revenues 5,855    
General and administrative expense     0
Other income, net (515)   (226)
Pretax income (loss) from discontinued operations     226
Income (loss) from discontinued operations, net of taxes $ (5,340)    
Discontinued Operations | Offshore Services      
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]      
Cost of revenues   5  
General and administrative expense   41 31
Other income, net   (324) 0
Pretax income (loss) from discontinued operations     $ (31)
Income (loss) from discontinued operations, net of taxes   $ 278