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Stock-based Compensation - Summary of Stock Options (Detail)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Stock Option [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Number of options - Beginning balance | shares 5,692,514  
Number of options, Granted | shares 3,742,124  
Number of options, Exercised | shares (5,591)  
Number of options, Cancelled | shares (416,678)  
Number of options - Ending balance | shares 9,012,369 5,692,514
Number of options vested and expected to vest | shares 9,006,650  
Number of options vested and exercisable | shares 2,766,840  
Weighted average exercise price - Beginning balance | $ / shares $ 12.07  
Weighted average exercise price Granted | $ / shares 3.01  
Weighted average exercise price Exercised | $ / shares 1.92  
Weighted average exercise price Cancelled | $ / shares 10.08  
Weighted Average Exercise Price - Ending balance | $ / shares 8.41 $ 12.07
Weighted average exercise price Options vested and expected to vest | $ / shares 8.41  
Weighted average exercise price options vested and exercisable | $ / shares $ 9.90  
Weighted- Average Remaining Contractual Term, Outstanding 8 years 7 months 9 days 8 years 7 months 17 days
Weighted- Average Remaining Contractual Term, Options vested and expected to vest 8 years 7 months 9 days  
Weighted- Average Remaining Contractual Term, Options vested and exercisable 7 years 9 months 25 days  
Aggregate Intrinsic Value - Options outstanding | $ $ 16,763  
Aggregate Intrinsic Value - Options outstanding | $ 200 $ 16,763
Aggregate Intrinsic Value, options vested and expected to vest | $ 200  
Aggregate Intrinsic Value, Options vested and exercisable | $ $ 200  
Restricted Stock [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Number of awards - Beginning balance | shares 89,054  
Number of awards, vested | shares (85,337)  
Number of awards - Ending balance | shares 3,717 89,054
Weighted average granted fair date value - Beginning balance | $ / shares $ 1.30  
Weighted average granted fair date value, vested | $ / shares 1.30  
Weighted average granted fair date value - Ending balance | $ / shares $ 1.30 $ 1.30
Aggregate intrinsic value - Beginning | $ $ 117  
Aggregate intrinsic value, Vested | $ (111)  
Aggregate intrinsic value - Ending balance | $ $ 6 $ 117