Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 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 55,064  
Fair value of restricted shares that vested during the period $ 1,148 $ 8,029
Compensation expense recognized during the period 4,230 2,691
Income tax benefit (cost) related to restricted stock awards $ (110) $ 2,418
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 14,744 112,070
Fair value of restricted shares that vested during the period $ 303 $ 3,554
Accumulated dividends paid upon vesting of restricted stock unit awards 63 544
Compensation expense recognized during the period 438 1,420
Income tax benefit (cost) related to restricted stock awards $ (129) $ 821