Share-based Compensation - Summary of Additional RSU Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Fair value of RSUs that vested | |||
Restricted Stock Units (RSUs) [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Weighted-average grant date fair value per unit | $ 27.89 | $ 28.25 | $ 19.99 |
Fair value of RSUs that vested | $ 916 |