Annual report pursuant to Section 13 and 15(d)

Income Taxes - Provision Expense (Benefit) For Income Taxes (Details)

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Income Taxes - Provision Expense (Benefit) For Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Current:    
Federal $ 0 $ 0
State 2 5
Foreign 0 0
Total current 2 5
Deferred:    
Federal 0 0
State 0 0
Foreign 0 0
Total deferred 0 0
Total $ 2 $ 5