Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Tax Provision (Benefit) (Details)

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Income Taxes - Components of Income Tax Provision (Benefit) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Current:    
Federal $ 0 $ 0
State and local 0 0
Foreign 0 0
Current income tax expense benefit 0 0
Deferred:    
Federal (11,196) (3,440)
State and local (4,318) (1,206)
Foreign (228) (2,018)
Deferred income tax expense benefit (15,742) (6,664)
Change in valuation allowance 15,742 6,664
Income tax benefit $ 0 $ 0