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Stock-based Compensation - Restricted Stock Activity (Detail) - Restricted Stock Units R S U [Member]
12 Months Ended
Dec. 31, 2021
$ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Non-vested restricted stock outstanding at beginning of year $ 9.52
Vested 10.89
Granted 8.32
Forfeited 10.33
Non-vested restricted stock outstanding at end of year $ 8.31