| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2021 | Dec 31, 2020 |
|---|---|---|---|---|---|
| Vessel revenue, net | |||||
| YoY growth | -16.8% | ||||
| Expenses: | |||||
| Voyage expenses | |||||
| Vessel operating expenses | |||||
| Management fees | |||||
| Management fees - related party | |||||
| General and administration expenses | |||||
| Depreciation and amortization | |||||
| Amortization of deferred dry-docking costs | |||||
| Impairment loss | |||||
| Gain on sale of vessels, net | |||||
| Operating (loss) / income | |||||
| % of revenue | -1.2% | ||||
| Other income / (expenses), net: | |||||
| Interest and finance costs | |||||
| Interest and finance costs-related party | |||||
| Loss on extinguishment of debt | |||||
| Interest income | |||||
| Loss on equity method investment | |||||
| Other income | |||||
| Gain on acquisition of RGI | |||||
| Foreign currency exchange (losses) / gain, net | |||||
| Total other expenses, net | |||||
| Net (loss) / income | |||||
| % of revenue | -16.4% | ||||
| Less: Net (loss) / income attributable to non-controlling interest | |||||
| Net (loss) / income attributable to common stockholders of United Maritime Corporation | |||||
| % of revenue | -16.4% | ||||
| Dividends to non-vested participating securities | |||||
| Net (loss) / income attributable to common stockholders | |||||
| Net (loss) / income per common share, basic (in dollars per share) | |||||
| Net (loss) / income per common share, diluted (in dollars per share) |