XML 45 R35.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-based Compensation - Summary of Stock Options (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Stock Option [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Number of options - Beginning balance 5,692,514  
Number of options, Granted 3,642,824  
Number of options, Exercised (4,966)  
Number of options, Cancelled (90,298)  
Number of options - Ending balance 9,240,074 5,692,514
Number of options vested and expected to vest 9,205,154  
Number of options vested and exercisable 2,186,541  
Weighted average exercise price - Beginning balance $ 12.07  
Weighted average exercise price Granted 3.06  
Weighted average exercise price Exercised 2.00  
Weighted average exercise price Cancelled 10.94  
Weighted Average Exercise Price - Ending balance 8.53 $ 12.07
Weighted average exercise price Options vested and expected to vest 8.55  
Weighted average exercise price options vested and exercisable $ 9.65  
Weighted- Average Remaining Contractual Term, Outstanding 8 years 11 months 19 days 8 years 7 months 17 days
Weighted- Average Remaining Contractual Term, Options vested and expected to vest 8 years 11 months 19 days  
Weighted- Average Remaining Contractual Term, Options vested and exercisable 8 years 2 months 8 days  
Aggregate Intrinsic Value - Options outstanding $ 16,763  
Aggregate Intrinsic Value - Options outstanding 115 $ 16,763
Aggregate Intrinsic Value, options vested and expected to vest 115  
Aggregate Intrinsic Value, Options vested and exercisable $ 83  
Restricted Stock [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Number of awards - Beginning balance 89,054  
Number of awards, granted 0  
Number of awards, vested (67,816)  
Number of awards - Ending balance 21,238 89,054
Weighted average granted fair date value - Beginning balance $ 1.30  
Weighted average granted fair date value, vested 1.30  
Weighted average granted fair date value - Ending balance $ 1.30 $ 1.30
Aggregate intrinsic value - Beginning $ 117  
Aggregate intrinsic value, Vested (88)  
Aggregate intrinsic value - Ending balance $ 29 $ 117