Post-effective amendment to a registration statement that is not immediately effective upon filing

Share-based Compensation - Additional Information (Detail)

v3.21.2
Share-based Compensation - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2020
Jun. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost $ 19,000,000     $ 19,000,000
Share-based compensation expense 818,000      
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expense, weighted-average recognition period       5 years
Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expense, weighted-average recognition period       4 years
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total fair value of shares vested   $ 2,595,000 $ 3,117,000 $ 785,000
Unrecognized compensation cost   30,047,000 $ 30,047,000  
Restricted Stock [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expense, weighted-average recognition period     5 years  
Restricted Stock [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expense, weighted-average recognition period     4 years  
Market Condition Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expense, weighted-average recognition period     2 years 7 months 6 days 2 years 11 months 15 days
Unrecognized compensation cost 927,000 2,649,000 $ 2,649,000 $ 927,000
Share-based compensation expense $ 33,000 1,155,000 $ 1,403,000 $ 33,000
Share-based compensation fair value per share     $ 10.76  
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense   $ 1,194,000 $ 1,194,000