Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation - Additional Information (Detail)

v3.21.1
Share-based Compensation - Additional Information (Detail)
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
Restricted Shares [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total fair value of shares vested $ 522,000
Unrecognized compensation cost $ 34,700,000
Restricted Shares [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 Shares [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 10 months 24 days
Unrecognized compensation cost $ 4,500,000
Share-based compensation expense $ 248,000
Share-based compensation fair value per share | $ / shares $ 11.04
Performance Shares [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation expense $ 0