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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Intangible assets $ 177,244 $ 160,281
Research and development capitalization 21,474 32,163
Share-based compensation 38,494 31,712
Net operating loss carryforwards 312,672 329,135
Research and development credits 81,340 67,667
Orphan drug credits 48,015 34,023
Development derivative liability   75,190
Convertible debt 1,021 5,582
Fixed Assets 194 18
Lease liability 3,026 2,888
Accruals 7,668 9,998
Deferred Interest Expense 1,974  
Inventory Reserves 31,476 6,317
UNICAP 1,806 1,086
Total deferred tax assets 726,404 756,060
Deferred tax liabilities:    
Right-of-use asset (2,821) (2,672)
Total deferred tax liabilities (2,821) (2,672)
Net deferred tax assets before allowance: 723,583 753,388
Less valuation allowance $ (723,583) $ (753,388)