| Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Cash and cash equivalents | 10 | - | 3 | 0 | 24 | 0 | 4 | 19 | 2 | 21 | 36 | 8 |
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| Restricted cash (Note 6) | - | - | - | 1 | 1 | 1 | 1 | - | - | - | - | 1 |
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| Trade accounts receivable | - | 0 | 0 | 0 | 1 | 1 | 1 | - | 0 | 0 | 0 | 1 |
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| Prepayments and other | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 1 |
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| Amount of lessee's right to use underlying asset under operating lease, classified as current. | - | - | - | - | - | - | - | - | - | - | - | 10 |
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| Deposit asset (Note 6) | - | - | - | - | - | - | - | - | - | - | - | 2 |
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| Inventories | - | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Total current assets | 10 | 1 | 5 | 5 | 29 | 5 | 51 | 45 | 75 | 23 | 39 | 23 |
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| Cost of vessels, including contract price and any material expenses incurred upon acquisition (initial repairs, improvements and delivery expenses, interest and on-site supervision costs incurred during the construction periods), less accumulated depreciation. | - | 38 | 32 | 126 | 155 | 181 | 354 | 136 | 157 | 389 | 375 | 361 |
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| Operating lease ROU asset | - | - | - | - | - | - | - | 45 | 37 | 29 | 19 | - |
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| Other fixed assets, net | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Total fixed assets | 16 | 74 | 58 | 127 | 163 | 220 | 367 | 214 | 225 | 418 | 395 | 362 |
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| Restricted cash (Note 7) | 2 | 0 | 2 | 4 | 5 | 6 | 8 | 4 | 4 | 4 | 4 | 3 |
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| Amount of consideration paid in advance to a related party for the purchase of fixed assets. | - | - | - | - | - | - | - | - | - | - | - | 24 |
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| Investments in unconsolidated joint ventures (Note 16) | - | - | - | - | - | - | - | - | 24 | 22 | 20 | 8 |
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| Trade accounts receivable, non-current | - | - | - | - | - | - | - | - | - | - | - | 2 |
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| Deferred Charges | - | - | - | - | - | - | - | - | - | - | 0 | - |
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| Total non-current assets | - | - | - | - | - | - | - | - | - | 28 | 26 | 37 |
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| Total assets | - | 76 | 75 | 143 | 220 | 258 | 445 | 293 | 331 | 469 | 459 | 423 |
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| Current portion of long-term debt | - | 1 | 2 | 8 | 10 | 10 | 17 | 5 | 7 | 12 | 12 | 14 |
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| Due to related parties (Note 5) | - | - | - | - | - | - | - | - | - | - | 5 | 1 |
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| Accounts payable | 2 | 2 | 5 | 2 | 3 | 4 | 4 | 3 | 2 | 2 | 1 | 2 |
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| Accrued liabilities | 5 | 5 | 6 | 3 | 2 | 3 | 4 | 1 | 1 | 2 | 2 | 3 |
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| Unearned revenue | - | - | - | - | - | - | - | - | - | - | - | 7 |
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| Short-term lease liability | - | - | - | - | - | - | - | 9 | 10 | 9 | 9 | 6 |
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| The excess of the fair market value over a predetermined amount for a vessel included in a sale and leaseback agreement, classified as current. The liability will be amortized on a daily basis to the facility's maturity when the vessel is sold or when the loan matures. | - | - | - | - | - | - | - | - | - | - | 5 | - |
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| Total current liabilities | 9 | 9 | 18 | 20 | 26 | 37 | 75 | 25 | 107 | 32 | 41 | 33 |
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| Non-current portion of long-term debt (Note 7) | - | 18 | 20 | 72 | 84 | 101 | 262 | 99 | 90 | 221 | 228 | 245 |
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| Non-current portion of Operating lease liabilities (Note 6) | - | - | - | - | - | - | - | 34 | 24 | 15 | 6 | - |
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| Unearned revenue, non-current | - | - | - | - | - | - | - | - | - | - | - | 0 |
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| Total non-current liabilities | 4 | 24 | 23 | 76 | 88 | 117 | 264 | 133 | 114 | 240 | 234 | 245 |
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| Total liabilities | 13 | 33 | 41 | 96 | 113 | 154 | 339 | 159 | 221 | 272 | 276 | 278 |
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| Preferred stock, $0.01 par value; 20,000,000 shares authorized; 3,659,627 and 0 Series F Shares issued and outstanding at December 31, 2023, and 2024 (Note 15) | - | - | - | - | - | - | - | - | - | 0 | 0 | - |
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| Amount of excess of issue price over par or stated value of stock and from other transaction involving temporary equity. Includes additional paid-in capital (APIC) for temporary equity. | - | - | - | - | - | - | - | - | - | 86 | 44 | - |
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| Ending balance | - | - | - | - | - | - | 18 | 14 | 16 | 86 | 44 | - |
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| Preferred stock, $0.01 par value; 20,000,000 shares authorized; of which 100,000 Series D Shares were outstanding at December 31, 2023 and 2024 (Note 9) | - | - | - | - | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Common stock, $0.01 par value; 1,000,000,000 shares authorized; 4,626,197 shares issued and outstanding at December 31, 2023 and 2024 (Note 9) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Additional paid-in capital | 293 | 318 | 318 | 329 | 403 | 412 | 411 | 466 | 430 | 428 | 451 | 451 |
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| Accumulated deficit | -279 | -276 | -284 | -283 | -297 | -308 | -323 | -345 | -337 | -318 | -312 | -307 |
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| Balance | 15 | 43 | 34 | 46 | 107 | 104 | 88 | 121 | 93 | 111 | 139 | 144 |
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| Total liabilities, mezzanine equity and stockholders' equity | 28 | 76 | 75 | 143 | 220 | 258 | 445 | 293 | 331 | 469 | 459 | 423 |
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