Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Details)

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Income Taxes - Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Balance at Beginning of the Year $ 2,565 $ 2,197 $ 0
Decreases as a Result of Tax Positions Taken in Prior Years (775) 0 0
Increases as a Result of Tax Positions Taken in the Current Year 100 368 2,197
Balance at End of the Year $ 1,890 $ 2,565 $ 2,197