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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Net operating loss carryforwards $ 44,189 $ 82,672
Tax credit carryforwards 56,717 52,538
Accruals and reserves 11,679 10,302
Deferred revenue 13,156 11,351
Stock-based compensation 7,417 4,921
Capitalized R&D 67,932 38,842
Gross deferred tax assets 201,090 200,626
Valuation allowance (29,914) (29,236)
Total deferred tax assets 171,176 171,390
Deferred tax liabilities:    
Fixed assets (2,648) (1,511)
Intangible assets (1,497) (917)
Total deferred tax liabilities (4,145) (2,428)
Deferred tax assets $ 167,031 $ 168,962