Annual report pursuant to Section 13 and 15(d)

Income Taxes Components of Deferred Income Tax Asset (Details)

v3.20.4
Income Taxes Components of Deferred Income Tax Asset (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Valuation Allowance [Line Items]    
Deferred Tax Assets, Operating Loss Carryforwards $ 65,790 $ 65,477
Deferred Tax Assets, Tax Credit Carryforwards, Research 79,019 80,404
Deferred Tax Assets, Other 11,669 7,768
Deferred Tax Asset, Lease obligation 1,731 2,047
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 4,442 1,441
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 5,415 3,460
Deferred Tax Assets, Gross 168,066 160,597
Deferred Tax Assets, Valuation Allowance (71,811) (77,957)
Deferred Tax Assets, Net of Valuation Allowance 96,255 82,640
Deferred Tax Liabilities, Other Finite-Lived Assets (42) (246)
Deferred Tax Liability, Leased right-of-use asset (1,099) (1,483)
Deferred Tax Liabilities, Intangible Assets (9,049) (13,627)
Deferred Tax Assets, Net 86,065 $ 67,284
Foreign Tax Authority [Member]    
Valuation Allowance [Line Items]    
Deferred Tax Assets, Other Tax Carryforwards $ 5,800