Quarterly report pursuant to Section 13 or 15(d)

Share Repurchase Program - Summary of Stock Repurchase Activities (Detail)

v3.19.3
Share Repurchase Program - Summary of Stock Repurchase Activities (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share Repurchase Program [Abstract]      
Shares repurchased 1,406,591 968,724 1,993,163
Average cost per share $ 28.46 $ 30.99 $ 29.11
Total cost of shares repurchased (in thousands): $ 40,027 $ 30,019 $ 58,027