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Income Taxes (Details 4) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Components of net deferred tax assets (liabilities)    
Depreciation and amortization $ 6,578 $ 13,199
Lease liabilities 7,873 8,716
Other timing differences, accruals and reserves 5,828 5,347
Deferred equity compensation 5,077 4,631
Net operating loss carryovers 14,602 15,692
Capitalized research 22,301 0
Tax credits 130,348 168,978
Total gross deferred tax assets 192,607 216,563
Lease right-of-use assets (5,323) (6,392)
Convertible debt (81) (130)
Deferred revenue (267) (45,845)
Total gross deferred tax liabilities (5,671) (52,367)
Total net deferred tax assets before valuation allowance 186,936 164,196
Valuation allowance (206,874) (174,119)
Net deferred tax liabilities $ (19,938) $ (9,923)