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Income Taxes - Significant Components of Net Deferred Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Net operating loss carryforwards $ 136,487 $ 115,424
Tax credits 23,193 17,552
Lease liability 1,398 2,670
Accruals and other 1,587 1,017
Capitalized R&D 10,544 0
Share-based compensation 7,628 7,114
Gross deferred tax assets 180,837 143,777
Valuation allowance (161,098) (133,845)
Net deferred tax assets 19,739 9,932
Deferred tax liability:    
Operating lease right-of-use assets (1,355) (2,626)
Fixed Assets (180) (235)
Net deferred tax assets $ 18,204 $ 7,071