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Share-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 25,365 $ 22,129 $ 17,032
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense 2,908 2,447 2,440
Non-Vested Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense $ 22,457 $ 19,682 $ 14,592