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Fair Value Measurements - Changes in fair value instruments (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Public Warrants |  |  |  |
Fair Value Measurements |  |  |  |
Derivative warrant liabilities balance at beginning | $ 2,300,000 | $ 287,500 | $ 287,500 | $ 261,050
Change in fair value | (29,900) | (221,950) | 2,012,500 | 26,450
Derivative warrant liabilities balance at ending | 2,270,100 | 65,550 | 2,300,000 | 287,500
Private Placement Warrants |  |  |  |
Fair Value Measurements |  |  |  |
Derivative warrant liabilities balance at beginning | 2,339,000 | 293,000 | 293,000 | 266,000
Change in fair value | (29,000) | (226,000) | 2,046,000 | 27,000
Derivative warrant liabilities balance at ending | 2,310,000 | 67,000 | 2,339,000 | 293,000
Warrant Liability |  |  |  |
Fair Value Measurements |  |  |  |
Derivative warrant liabilities balance at beginning | 4,639,000 | 580,500 | 580,500 | 527,050
Change in fair value | (58,900) | (447,950) | 4,058,500 | 53,450
Derivative warrant liabilities balance at ending | $ 4,580,100 | $ 132,550 | $ 4,639,000 | 580,500
Share Redemptions Payable |  |  |  |
Fair Value Measurements |  |  |  |
Establishment of share repurchase liability |  |  |  | 197,694,657
Share repurchase payment |  |  |  | $ (197,694,657)

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