Stockholders' Equity - Additional Information (Detail) - USD ($)			3 Months Ended	12 Months Ended
	Jun. 04, 2015	May. 27, 2014	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 01, 2014
Shareholders Equity [Line Items]
Preferred stock, shares authorized				1,000,000	1,000,000
Common stock, shares authorized				200,000,000	200,000,000
Common stock, par value				$ 0.01	$ 0.01		$ 0.01
Common stock, shares issued				76,488,000	76,357,000
Common stock, shares outstanding				76,488,000	76,357,000
Aggregate amount of stock repurchases authorized				$ 169,000,000
Expiration date, current stock repurchase program	Jun. 30, 2016
Stock repurchase program, additional authorized amount, value				$ 50,000,000	$ 14,410,000	$ 12,164,000
Cash dividends declared, per share		$ 0.030		$ 0.12	$ 0.105	$ 0.06
Dividend payments to shareholders			$ 0	$ 9,194,000	$ 6,874,000	$ 3,421,000
Maximum
Shareholders Equity [Line Items]
Stock repurchase program, additional authorized amount, value	$ 50,000,000
Post-Split Basis
Shareholders Equity [Line Items]
Cash dividends declared, per share		$ 0.015