Annual report pursuant to Section 13 and 15(d)

Income Taxes Components of Deferred Income Tax Asset (Details)

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Income Taxes Components of Deferred Income Tax Asset (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Valuation Allowance [Line Items]    
Deferred Tax Assets, Operating Loss Carryforwards $ 65,477 $ 64,887
Deferred Tax Assets, Tax Credit Carryforwards, Research 80,404 75,032
Deferred Tax Assets, Other 7,768 7,965
Deferred Tax Asset, Lease obligation 2,047 0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 1,441 2,504
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 3,460 2,550
Deferred Tax Assets, Gross 160,597 152,938
Deferred Tax Assets, Valuation Allowance (77,957) (79,196)
Deferred Tax Assets, Net of Valuation Allowance 82,640 73,742
Deferred Tax Liabilities, Other Finite-Lived Assets (246) (1,391)
Deferred Tax Liability, Leased right-of-use asset (1,483) 0
Deferred Tax Liabilities, Intangible Assets (13,627) (20,833)
Deferred Tax Assets, Net 67,284 $ 51,518
Foreign Tax Authority [Member]    
Valuation Allowance [Line Items]    
Deferred Tax Assets, Other Tax Carryforwards $ 24,500