Quarterly report pursuant to Section 13 or 15(d)

Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail)

v3.21.2
Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of restricted stock unit awards that vested during the period 115,072  
Fair value of restricted shares that vested during the period $ 2,477 $ 8,700
Compensation expense recognized during the period 8,946 5,403
Income tax benefit (cost) related to restricted stock awards $ 55 $ 2,620
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of restricted stock unit awards that vested during the period 15,230 117,500
Fair value of restricted shares that vested during the period $ 314 $ 3,634
Accumulated dividends paid upon vesting of restricted stock unit awards 62 563
Compensation expense recognized during the period 1,629 3,029
Income tax benefit (cost) related to restricted stock awards $ (306) $ 526