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Income Taxes - Schedule of (Provision for) Benefit from Income Taxes (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Current income taxes:      
Federal $ (80) $ (248) $ (423)
State (42) (151) (59)
Foreign   (1) 0
Total current income taxes (122) (400) (482)
Deferred income taxes:      
Federal (1,748) (409) 34
Total deferred income taxes (1,748) (409) 34
Total income tax (provision) benefit $ (1,870) $ (809) $ (448)