Stockholders' Equity - Additional Information (Detail) - USD ($)			12 Months Ended
	May 18, 2016	May 27, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 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
Common stock, shares issued			76,591,000	76,488,000
Common stock, shares outstanding			76,591,000	76,488,000
Aggregate amount of stock repurchases authorized			$ 195,000,000
Expiration date, current stock repurchase program	Jun. 30, 2017
Stock repurchase program, additional authorized amount, value			$ 25,879,000	$ 50,000,000	$ 14,410,000
Cash dividends declared, per share		$ 0.030	$ 0.12	$ 0.12	$ 0.105
Dividend payments to shareholders			$ 9,174,000	$ 9,194,000	$ 6,874,000
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