Stockholders' Equity - Additional Information (Detail) - USD ($)	Jul. 24, 2019	Jun. 30, 2019	Feb. 06, 2019	Jul. 25, 2018	Sep. 06, 2013
2013 program
Class Of Stock [Line Items]
Increase of the authorization under the stock buyback program			$ 250,000,000	$ 250,000,000
Remaining amount approved for repurchases under stock buyback program		$ 100,000,000
2013 program | Maximum
Class Of Stock [Line Items]
Amount approved for repurchases under stock buyback program					$ 200,000,000
Subsequent Event | 2013 program
Class Of Stock [Line Items]
Increase of the authorization under the stock buyback program	$ 250,000,000
Subsequent Event | Dividend Declared
Class Of Stock [Line Items]
Dividend per share, declared	$ 0.04
Dividend payment date	Sep. 19, 2019
Dividend record date	Sep. 05, 2019