Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive (Loss) Income, Net	Accumulated Earnings	Treasury Stock
Beginning Balance at Dec. 31, 2013	$ 361,316		$ 718,644	$ 8,345	$ 1,091,283	$ (1,457,034)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	183,766				183,766
Other comprehensive income (loss)	(29,515)			(29,515)
Issuances under stock plans	7,800		(11,727)			19,527
Stock compensation tax benefits	18,671		18,671
Common share repurchases	(419,712)					(419,712)
Stock compensation expense	38,845		38,845
Ending Balance at Dec. 31, 2014	161,171	$ 78	764,433	(21,170)	1,275,049	(1,857,219)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	175,635				175,635
Other comprehensive income (loss)	(23,232)			(23,232)
Issuances under stock plans	7,531		(5,964)			13,495
Stock compensation tax benefits	13,928		13,928
Common share repurchases	(513,582)					(513,582)
Stock compensation expense	46,149		46,149
Ending Balance at Dec. 31, 2015	(132,400)	78	818,546	(44,402)	1,450,684	(2,357,306)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU No. 2016-09	(261)				(261)
Net income	193,582				193,582
Other comprehensive income (loss)	(5,281)			(5,281)
Issuances under stock plans	10,339		(2,080)			12,419
Common share repurchases	(51,762)					(51,762)
Stock compensation expense	46,661		46,661
Ending Balance at Dec. 31, 2016	$ 60,878	$ 78	$ 863,127	$ (49,683)	$ 1,644,005	$ (2,396,649)