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Stock-Based Compensation - Summary of Stock Options Activity (Detail) - 2019 Equity Incentive Plan [Member] - Share-based Payment Arrangement, Option [Member] - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Stock Options, Outstanding, December 31, 2021 421,500  
Number of Stock Options, Expired/terminated (5,600)  
Number of Stock Options, Outstanding, March 31, 2022 415,900 421,500
Number of Stock Options, Exercisable at period end 151,200  
Weighted- Average Exercise Price, Outstanding, December 31, 2021 $ 10.46  
Weighted- Average Exercise Price, Expired/terminated 12.00  
Weighted- Average Exercise Price, Outstanding, March 31, 2022 10.54 $ 10.46
Weighted- Average Exercise Price, Exercisable at period end $ 10.10  
Weighted- Average Remaining Contractual Term, Expired/terminated 8 years 7 months 6 days  
Weighted- Average Remaining Contractual Term, Balance 7 years 7 months 6 days 7 years 10 months 24 days
Weighted- Average Remaining Contractual Term, Exercisable at period end 7 years 3 months 18 days  
Aggregate Intrinsic Value, Outstanding, December 31, 2021 $ 780  
Aggregate Intrinsic Value, Outstanding 416 $ 780
Aggregate Intrinsic Value, Exercisable at period end $ 171