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Income Taxes (Details 2) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Income Taxes |  |
Tax benefit at US federal statutory rates | $ (0.6) | $ (1.7)
Tax benefit at state statutory rates | (0.1) | (0.3)
Other | 0.0 | 0.0
Increase in valuation allowance | 0.7 | 2.0
Total provision for income tax benefit | $ 0.0 | $ 0.0

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