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Income Taxes - Deferred tax assets and liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2014
Deferred Tax Assets:      
Net operating loss carryforwards $ 72,777 $ 66,160  
Section 174 Capitalized R&D 37,240 16,570  
Research and development credits 19,058 12,844 $ 200
Equity compensation 10,533 10,021  
Deferred Zejula royalty revenue 6,978 7,371  
Lease liability 3,912 4,194  
Other, net 7,201 3,458  
Total deferred tax assets 157,699 120,618  
Deferred Tax Liabilities:      
ROU asset (3,552) (3,859)  
Other, net (2,658) 0  
Fixed assets (122) (189)  
Total deferred tax liabilities (6,332) (4,048)  
Net deferred tax assets 151,367 116,570  
Less: valuation allowance (151,367) (116,570)  
Deferred tax assets, net of valuation allowance $ 0 $ 0