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Income Taxes - Schedule of Deferred Tax Assets (Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Net operating loss carryforwards $ 316,034 $ 288,264
Research and development tax credits 34,243 30,002
Orphan drug credits 24,524 24,524
Capitalized research and development 38,688 37,357
Stock-based compensation 4,327 6,965
Interest 1,748 1,359
Other 2,726 3,308
Total deferred tax assets 422,290 391,779
Deferred tax liabilities:    
Other (1,357) (1,608)
Total deferred tax liabilities (1,357) (1,608)
Less: valuation allowance (420,933) (390,171)
Net deferred tax liabilities $ 0 $ 0