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Significant accounting policies (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jul. 31, 2022 | Jun. 17, 2021
Significant accounting policies |  |  |  |  |
Standard Corporation Tax Rate | 12.50% |  |  |  |
Higher Corporation Tax Rate | 25.00% |  |  |  |
Vessels Scrap Value Per Lightweight Ton | $ 400 |  |  |  |
Deferred Income Tax Expense (Benefit) | 0 | $ 0 | $ 0 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 0 | 0 | $ 0 |  |
Equity Method Investment, Aggregate Cost | 4,500,000 |  |  |  |
Common Stock, Value, Issued | $ 440,000 | $ 433,000 |  |  |
Lessor, Operating Lease, Term of Contract |  |  |  | 24 months |
Vessels [Member] |  |  |  |  |
Significant accounting policies |  |  |  |  |
Property, Plant and Equipment, Useful Life | 25 years |  |  |  |
Office Equipment and Fixtures and Fittings [Member] |  |  |  |  |
Significant accounting policies |  |  |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |  |  |
Minimum [Member] |  |  |  |  |
Significant accounting policies |  |  |  |  |
Scheduled drydocking period of vessels | 30 months |  |  |  |
Maximum [Member] |  |  |  |  |
Significant accounting policies |  |  |  |  |
Scheduled drydocking period of vessels | 60 months |  |  |  |
Ardmore Shipping Corporation |  |  |  |  |
Significant accounting policies |  |  |  |  |
Equity Method Investment, Ownership Percentage | 100.00% |  |  |  |
Anglo Ardmore Ship Management Limited |  |  |  |  |
Significant accounting policies |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |  |  |
Element 1 Corp. |  |  |  |  |
Significant accounting policies |  |  |  |  |
Equity Method Investment, Ownership Percentage | 10.00% |  |  |  | 10.00%
Equity Method Investment, Aggregate Cost | $ 9,300,000 |  |  |  | $ 9,300,000
Common Stock, Value, Issued | 4,500,000 |  |  |  | $ 5,300,000
Impariment | $ 4,400,000 |  |  |  |

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