Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Information related to Right-of-use Assets and Liabilities (Detail)

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Commitments and Contingencies - Information related to Right-of-use Assets and Liabilities (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]    
Cash paid for operating lease liabilities $ 246 $ 489
Right-of-use assets obtained in exchange for new operating lease obligations $ 150 $ 1,976
Weighted-average remaining lease term 3 years 8 months 12 days 4 years 9 months 18 days
Weighted-average discount rate 12.30% 12.30%