Stockholders' Equity - Additional Information (Detail) - USD ($)			9 Months Ended
	Oct. 26, 2016	Sep. 15, 2016	Sep. 30, 2016	Sep. 06, 2013
Class Of Stock [Line Items]
Shares issued for acquisition, value			$ 6,733,000
Common Stock
Class Of Stock [Line Items]
Shares issued for acquisition		353,804	354,000
Shares issued for acquisition, value		$ 6,700,000	$ 3,000
2013 program
Class Of Stock [Line Items]
Remaining amount approved for repurchases under stock buyback program			$ 187,000,000
2013 program | Maximum
Class Of Stock [Line Items]
Amount approved for repurchases under stock buyback program				$ 200,000,000
Subsequent Event | Dividend Declared
Class Of Stock [Line Items]
Dividend declaration date	Oct. 26, 2016
Dividend per share, declared	$ 0.02
Dividend payment date	Dec. 22, 2016
Dividend record date	Dec. 08, 2016