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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Stock options granted (in shares) 0    
Weighted average remaining contractual life of options outstanding 2 years 7 months 6 days    
Shares available for future issuance under equity compensation plans 1,980,709    
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years 3 years 3 years
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years 4 years 4 years
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested restricted stock (in shares) 1,508 1,483  
Unvested compensation cost $ 1,896    
Unvested compensation cost period of recognition 27 months    
Performance stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested restricted stock (in shares) 49,376    
Unvested compensation cost $ 412    
Unvested compensation cost period of recognition 19 months