Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Share Repurchase Program - Summary of Stock Repurchase Activities (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Share Repurchase Program [Abstract]        
Shares repurchased 510,773 510,581 968,724 586,572
Average cost per share $ 29.39 $ 29.38 $ 30.99 $ 30.69
Total cost of shares repurchased (in thousands): $ 15,010 $ 15,000 $ 30,019 $ 18,000