| Schedule of Debt [Table Text Block] |
| | | | Borrower(s) | | December 31, 2024 | | | June 30, 2025 | |
| A. | | | Term Loans: | | | | | | | | |
| | 1 | | Ainsley Maritime Co. and Ambrose Maritime Co. | | $ | 109,821 | | | $ | 104,464 | |
| | 2 | | Hyde Maritime Co. and Skerrett Maritime Co. | | | 104,596 | | | | 98,942 | |
| | 3 | | Kemp Maritime Co. | | | 52,825 | | | | 49,975 | |
| | 4 | | Achilleas Maritime Corporation et al. | | | 33,492 | | | | 25,953 | |
| | 5 | | Costamare Inc. | | | 27,750 | | | | 24,250 | |
| | 6 | | Benedict et al. | | | 294,762 | | | | 253,714 | |
| | 7 | | Reddick Shipping Co. and Verandi Shipping Co. | | | 21,000 | | | | 15,000 | |
| | 8 | | Quentin Shipping Co. and Sander Shipping Co. | | | 64,250 | | | | 59,063 | |
| | 9 | | Bastian Shipping Co. et al. | | | 199,390 | | | | 170,820 | |
| | 10 | | NML Loan 1 | | | - | | | | - | |
| | 11 | | Kalamata Shipping Corporation et al. | | | 54,000 | | | | 49,000 | |
| | 12 | | Capetanissa Maritime Corporation et al. | | | 18,917 | | | | 17,167 | |
| | 13 | | NML Loan 2 | | | 23,250 | | | | 21,750 | |
| | 14 | | NML Loan 3 | | | 8,190 | | | | 7,670 | |
| | 15 | | NML Loan 4 | | | 11,628 | | | | 10,638 | |
| | 16 | | NML Loan 5 | | | 4,942 | | | | 4,447 | |
| | 17 | | NML Loan 6 | | | 5,510 | | | | 5,042 | |
| | 18 | | NML Loan 7 | | | 9,581 | | | | 9,056 | |
| | 19 | | NML Loan 8 | | | 11,196 | | | | 10,494 | |
| | 20 | | NML Loan 9 | | | 10,900 | | | | 9,941 | |
| | 21 | | NML Loan 10 | | | 21,392 | | | | 10,282 | |
| | 22 | | NML Loan 11 | | | 16,485 | | | | 7,935 | |
| | 23 | | NML Loan 12 | | | 5,910 | | | | 5,470 | |
| | 24 | | NML Loan 13 | | | 5,302 | | | | 4,820 | |
| | 25 | | NML Loan 14 | | | 4,385 | | | | 3,965 | |
| | 26 | | NML Loan 15 | | | 5,130 | | | | 4,874 | |
| | 27 | | NML Loan 16 | | | - | | | | 11,619 | |
| | 28 | | NML Loan 17 | | | - | | | | 19,236 | |
| | 29 | | Sykes Maritime Co. | | | - | | | | 23,108 | |
| | 30 | | Beardmore Maritime Co. | | | - | | | | - | |
| | 31 | | Fairbank Maritime Co. | | | - | | | | - | |
| | | | Total Term Loans | | $ | 1,124,604 | | | $ | 1,038,695 | |
| B. | | | Other financing arrangements | | | 584,632 | | | | 559,962 | |
| C. | | | Unsecured Bond Loan | | | - | | | | - | |
| | | | Total long-term debt | | $ | 1,709,236 | | | $ | 1,598,657 | |
| | | | Less: Deferred financing costs | | | (11,396 | ) | | | (9,908 | ) |
| | | | Total long-term debt, net | | $ | 1,697,840 | | | $ | 1,588,749 | |
| | | | Less: Long-term debt current portion | | | (290,882 | ) | | | (285,390 | ) |
| | | | Add: Deferred financing costs, current portion | | | 3,522 | | | | 3,161 | |
| | | | Total long-term debt, non-current, net | | $ | 1,410,480 | | | $ | 1,306,520 | |
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