v3.25.2
Segments (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Jun. 30, 2025
USD ($)
segment
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2024
USD ($)
Summary of the Company's selected financial information                
Number of reportable segments | segment         2      
Income Statement                
Operating revenues $ 262,154   $ 246,306   $ 515,461 $ 499,755 $ 499,755  
Voyage expenses (16,810)   (12,678)   (34,945) (33,020)    
Vessel operating expenses (56,385)   (47,090)   (108,087) (90,204)    
Amortization of deferred drydocking and special survey costs (11,515)   (6,972)   (22,485) (12,424)    
Interest income 3,661   2,923   7,266 5,859    
Interest expense (9,711)   (5,106)   (19,714) (8,230)    
Net gain on disposal of vessel     7,094     7,094    
Net Income 130,904 $ 115,147 141,152 $ 150,498 246,051 291,650    
Statement of Financial Position                
Marketable securities 107,919       107,919     $ 60,850
Total Assets 4,521,160       4,521,160     $ 4,343,654
Operating Segments                
Income Statement                
Operating revenues         515,461 499,755    
Voyage expenses         (34,945) (33,020)    
Vessel operating expenses         (108,087) (90,204)    
Depreciation         (80,726) (69,243)    
Amortization of deferred drydocking and special survey costs         (22,485) (12,424)    
Interest income         7,208 5,859    
Interest expense         (19,714) (8,230)    
Net gain on disposal of vessel           7,094    
Other segment items         (28,050) (24,918)    
Net Income per segment         228,662 274,669    
Gain on investments, dividend income and equity loss on investments, net of interest income         17,389 16,981    
Net Income         246,051 291,650    
Statement of Financial Position                
Total assets per segment 4,413,002   3,947,061   4,413,002 3,947,061    
Marketable securities 107,919   99,232   107,919 99,232    
Investments in affiliates 239   64   239 64    
Total Assets 4,521,160   4,046,357   4,521,160 4,046,357    
Container vessels segment | Operating Segments                
Income Statement                
Operating revenues         475,636 463,997    
Voyage expenses         (17,734) (16,741)    
Vessel operating expenses         (92,571) (79,430)    
Depreciation         (74,154) (65,255)    
Amortization of deferred drydocking and special survey costs         (18,252) (12,135)    
Interest income         7,208 5,859    
Interest expense         (19,714) (8,230)    
Net gain on disposal of vessel           7,094    
Other segment items         (25,481) (23,117)    
Net Income per segment         234,938 272,042    
Statement of Financial Position                
Total assets per segment 4,147,326   3,710,004   4,147,326 3,710,004    
Drybulk vessels segment | Operating Segments                
Income Statement                
Operating revenues         39,825 35,758    
Voyage expenses         (17,211) (16,279)    
Vessel operating expenses         (15,516) (10,774)    
Depreciation         (6,572) (3,988)    
Amortization of deferred drydocking and special survey costs         (4,233) (289)    
Other segment items         (2,569) (1,801)    
Net Income per segment         (6,276) 2,627    
Statement of Financial Position                
Total assets per segment $ 265,676   $ 237,057   $ 265,676 $ 237,057