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Share-based Compensation - Summary of Additional Stock Option Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]      
Weighted-average grant date fair value per share   $ 10.52 $ 7.58
Intrinsic value of options exercised $ 4,531 $ 7,392 $ 219
Fair value of stock options that vested     $ 353