v3.26.1
Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Operating Revenues $ 54,630 $ 60,810 $ 98,912 $ 116,309  
Operating 46,684 49,493 84,257 91,421  
Direct Vessel Profit (Loss) 7,946 11,317 14,655 24,888  
Lease expense 266 325 516 662  
Administrative and general 12,343 11,998 22,297 23,484  
Depreciation and amortization 10,718 12,090 21,048 24,900  
Other Costs and Expenses 23,327 24,413 43,861 49,046  
Gains on asset dispositions and impairments, net 31,347 19,163 38,795 24,972  
Operating Income 15,966 6,067 9,589 814  
Historical cost 754,369 887,408 754,369 887,408 $ 776,833
Accumulated depreciation (351,840) (377,265) (351,840) (377,265) (348,812)
Property and equipment 402,529 510,143 402,529 510,143 $ 428,021
Total Assets 542,642 [1] 630,607 [2] 542,642 [1] 630,607 [2]  
Time Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 49,697 57,673 91,654 109,606  
Bareboat Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 834 838 1,662 1,546  
Other Marine Services          
Segment Reporting Information [Line Items]          
Operating Revenues 4,099 2,299 5,596 5,157  
Personnel          
Segment Reporting Information [Line Items]          
Operating 15,697 18,969 31,119 37,506  
Repairs and Maintenance          
Segment Reporting Information [Line Items]          
Operating 12,648 13,648 23,248 22,168  
Drydocking          
Segment Reporting Information [Line Items]          
Operating 2,961 5,143 4,213 9,012  
Insurance and Loss Reserves          
Segment Reporting Information [Line Items]          
Operating 2,698 2,982 4,490 5,135  
Fuel, Lubes and Supplies          
Segment Reporting Information [Line Items]          
Operating 5,302 4,296 8,610 8,842  
Other Direct Costs and Expenses          
Segment Reporting Information [Line Items]          
Operating 7,378 4,455 12,577 8,758  
Americas          
Segment Reporting Information [Line Items]          
Operating Revenues 17,705 [3] 22,672 [4] 28,658 [3] 40,482 [4]  
Operating 13,806 [3] 19,374 [4] 24,779 [3] 34,986 [4]  
Direct Vessel Profit (Loss) 3,899 [3] 3,298 [4] 3,879 [3] 5,496 [4]  
Lease expense 191 [3] 202 [4] 368 [3] 393 [4]  
Depreciation and amortization 3,168 [3] 4,600 [4] 6,334 [3] 9,778 [4]  
Historical cost 187,845 [3] 320,379 [4] 187,845 [3] 320,379 [4]  
Accumulated depreciation (91,051) [3] (145,095) [4] (91,051) [3] (145,095) [4]  
Property and equipment 96,794 [3] 175,284 [4] 96,794 [3] 175,284 [4]  
Total Assets 120,274 [1],[3] 209,413 [2],[4] 120,274 [1],[3] 209,413 [2],[4]  
Americas | Time Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 15,518 [3] 20,773 [4] 25,361 [3] 36,161 [4]  
Americas | Bareboat Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 834 [3] 838 [4] 1,662 [3] 1,546 [4]  
Americas | Other Marine Services          
Segment Reporting Information [Line Items]          
Operating Revenues 1,353 [3] 1,061 [4] 1,635 [3] 2,775 [4]  
Americas | Personnel          
Segment Reporting Information [Line Items]          
Operating 5,322 [3] 8,943 [4] 11,329 [3] 17,370 [4]  
Americas | Repairs and Maintenance          
Segment Reporting Information [Line Items]          
Operating 2,252 [3] 2,664 [4] 3,896 [3] 5,217 [4]  
Americas | Drydocking          
Segment Reporting Information [Line Items]          
Operating 680 [3] 4,229 [4] 1,120 [3] 5,826 [4]  
Americas | Insurance and Loss Reserves          
Segment Reporting Information [Line Items]          
Operating 787 [3] 1,241 [4] 1,210 [3] 2,098 [4]  
Americas | Fuel, Lubes and Supplies          
Segment Reporting Information [Line Items]          
Operating 1,494 [3] 1,303 [4] 2,569 [3] 2,786 [4]  
Americas | Other Direct Costs and Expenses          
Segment Reporting Information [Line Items]          
Operating 3,271 [3] 994 [4] 4,655 [3] 1,689 [4]  
Africa and Europe          
Segment Reporting Information [Line Items]          
Operating Revenues 26,289 25,341 49,400 47,028  
Operating 17,824 16,032 30,795 31,419  
Direct Vessel Profit (Loss) 8,465 9,309 18,605 15,609  
Lease expense 0 51 0 114  
Depreciation and amortization 4,485 4,263 8,548 8,665  
Historical cost 322,783 315,018 322,783 315,018  
Accumulated depreciation (142,164) (122,999) (142,164) (122,999)  
Property and equipment 180,619 192,019 180,619 192,019  
Total Assets 224,039 [1] 229,966 [2] 224,039 [1] 229,966 [2]  
Africa and Europe | Time Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 25,248 24,535 47,782 45,370  
Africa and Europe | Bareboat Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 0 0 0 0  
Africa and Europe | Other Marine Services          
Segment Reporting Information [Line Items]          
Operating Revenues 1,041 806 1,618 1,658  
Africa and Europe | Personnel          
Segment Reporting Information [Line Items]          
Operating 5,523 5,515 10,505 10,698  
Africa and Europe | Repairs and Maintenance          
Segment Reporting Information [Line Items]          
Operating 5,673 4,646 8,630 8,108  
Africa and Europe | Drydocking          
Segment Reporting Information [Line Items]          
Operating 554 901 730 2,142  
Africa and Europe | Insurance and Loss Reserves          
Segment Reporting Information [Line Items]          
Operating 504 899 834 1,493  
Africa and Europe | Fuel, Lubes and Supplies          
Segment Reporting Information [Line Items]          
Operating 2,416 1,714 3,750 3,894  
Africa and Europe | Other Direct Costs and Expenses          
Segment Reporting Information [Line Items]          
Operating 3,154 2,357 6,346 5,084  
Middle East and Asia          
Segment Reporting Information [Line Items]          
Operating Revenues 10,636 12,797 20,854 28,799  
Operating 15,054 14,087 28,683 25,016  
Direct Vessel Profit (Loss) (4,418) (1,290) (7,829) 3,783  
Lease expense 75 72 148 155  
Depreciation and amortization 3,065 3,227 6,166 6,457  
Historical cost 243,741 252,011 243,741 252,011  
Accumulated depreciation (118,625) (109,171) (118,625) (109,171)  
Property and equipment 125,116 142,840 125,116 142,840  
Total Assets 198,329 [1] 191,228 [2] 198,329 [1] 191,228 [2]  
Middle East and Asia | Time Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 8,931 12,365 18,511 28,075  
Middle East and Asia | Bareboat Charter          
Segment Reporting Information [Line Items]          
Operating Revenues 0 0 0 0  
Middle East and Asia | Other Marine Services          
Segment Reporting Information [Line Items]          
Operating Revenues 1,705 432 2,343 724  
Middle East and Asia | Personnel          
Segment Reporting Information [Line Items]          
Operating 4,852 4,511 9,285 9,438  
Middle East and Asia | Repairs and Maintenance          
Segment Reporting Information [Line Items]          
Operating 4,723 6,338 10,722 8,843  
Middle East and Asia | Drydocking          
Segment Reporting Information [Line Items]          
Operating 1,727 13 2,363 1,044  
Middle East and Asia | Insurance and Loss Reserves          
Segment Reporting Information [Line Items]          
Operating 1,407 842 2,446 1,544  
Middle East and Asia | Fuel, Lubes and Supplies          
Segment Reporting Information [Line Items]          
Operating 1,392 1,279 2,291 2,162  
Middle East and Asia | Other Direct Costs and Expenses          
Segment Reporting Information [Line Items]          
Operating $ 953 $ 1,104 $ 1,576 $ 1,985  
[1] Total Assets by region does not include corporate assets of $90.7 million as of June 30, 2026.
[2] Total Assets by region does not include corporate assets of $49.4 million as of June 30, 2025.
[3] In prior periods the United States and Latin America were reported as separate segments. Due to the reduction of the United States operating segment, the Company’s United States operations are no longer analyzed by the chief operating decision maker on a standalone basis but rather as part of the Americas segment. As a result, for purposes of segment reporting United States operations are now consolidated with Latin America operations and reported as a consolidated segment, and prior period information has been conformed to the new consolidated reporting segment.
[4] In prior periods the United States and Latin America were reported as separate segments. Due to the reduction of the United States operating segment, the Company’s United States operations are no longer analyzed by the chief operating decision maker on a standalone basis but rather as part of the Americas segment. As a result, for purposes of segment reporting United States operations are now consolidated with Latin America operations and reported as a consolidated segment, and prior period information has been conformed to the new consolidated reporting segment.