v3.25.1
Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]        
Loss before income taxes $ (23,047) $ (32,990) $ (101,454) $ (54,738)
Tax expense at statutory rate     (21,305) (11,495)
Increases (reductions) in taxes resulting from:        
Loss attributable to redeemable noncontrolling interest     (1,478) (225)
Change in fair value of warrant liabilities     0 70
Change in fair value of derivative liability     0 (955)
Change in preferred dividend     943 0
Change in prepaid expenses     (529) 0
Change in valuation allowance     (613) 952
Unrecognized benefit from LLC flow thru structure     21,269 11,667
State income taxes, net of federal income tax benefit     41 0
Other adjustments, net     1,713 (14)
Income tax expense (benefit) $ 0 $ 0 $ 41 $ 0
Tax Rate        
Tax expense at statutory rate 21.00%   21.00% 21.00%
Increases (reductions) in taxes resulting from:        
Loss attributable to redeemable noncontrolling interest     1.50% 0.40%
Change in fair value of warrant liabilities     0.00% (0.10%)
Change in fair value of derivative liability     0.00% 1.70%
Change in preferred dividend     0.00% 0.00%
Change in prepaid expenses     0.00% 0.00%
Change in valuation allowance     0.60% (1.70%)
Unrecognized benefit from LLC flow thru structure     (21.00%) (21.30%)
State income taxes, net of federal income tax benefit     0.00% 0.00%
Other adjustments, net     (1.70%) 0.00%
Income tax expense 0.00%   0.40% 0.00%