Annual report pursuant to Section 13 and 15(d)

Income Taxes - NOL Carryforwards and Federal Research and Development Tax Credits (Details)

v3.20.4
Income Taxes - NOL Carryforwards and Federal Research and Development Tax Credits (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Federal  
Operating Loss and Tax Credit Carryforwards [Line Items]  
Net operating losses, amount $ 224,475
Net operating losses, not subject to expiration, amount 82,931
Tax credits, amount 10,654
State  
Operating Loss and Tax Credit Carryforwards [Line Items]  
Net operating losses, amount 127,317
Tax credits, amount 11,977
Foreign  
Operating Loss and Tax Credit Carryforwards [Line Items]  
Net operating losses, amount $ 778