Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		4 Months Ended	12 Months Ended	168 Months Ended
	Mar. 16, 2016	Dec. 31, 2016	Jul. 16, 2016	Apr. 23, 2016	Dec. 31, 2016	Dec. 31, 2016	Jan. 02, 2016	Dec. 19, 2002
Class Of Stock [Line Items]
Common stock, shares authorized		500,000,000			500,000,000	500,000,000	500,000,000
Common stock, par value		$ 0.01			$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized		1,000,000			1,000,000	1,000,000
Common stock, voting rights					one vote for each share
Stock repurchase plan, shares authorized								74,600,000
Current shares available for repurchase		6,800,000			6,800,000	6,800,000
Purchase of shares under accelerated share repurchase		128	932,380	5,959,814	6,892,322	67,800
Agreement to repurchase an aggregate of common stock		$ 2	$ 18,000	$ 108,298	$ 126,300	$ 630,400
Accelerated Share Repurchase Program
Class Of Stock [Line Items]
Purchase of shares under accelerated share repurchase	5,600,000		900,000
Agreement to repurchase an aggregate of common stock	$ 120,000
Series A Preferred Stock
Class Of Stock [Line Items]
Preferred stock, shares authorized		200,000			200,000	200,000	200,000
Preferred stock, par value		$ 100			$ 100	$ 100	$ 100
Preferred stock, shares issued		0			0	0	0
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, shares authorized		800,000			800,000	800,000	800,000
Preferred stock, par value		$ 0.01			$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares issued		0			0	0	0