Consolidated Statement of Changes in Shareholders Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock at Cost	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 28, 2013	$ 454,481	$ 670	$ 179,807	$ 1,173,044	$ (899,028)	$ (12)
Beginning Balance (in shares) at Dec. 28, 2013		67,017,858			21,528,693
Net income	100,318			100,318
Dividends	(8,551)			(8,551)
Purchases of common stock (in shares)					939,872
Purchases of common stock	(56,393)				(56,393)
Issuance of stock related to stock-based compensation plans, including excess tax effect (in shares)		193,768			5,766
Issuance of stock related to stock-based compensation plans, including excess tax effect	1,882	2	2,072		(192)
Stock-based compensation	4,218		4,218
Other comprehensive loss	(283)					(283)
Ending Balance at Sep. 27, 2014	$ 495,672	$ 672	$ 186,097	$ 1,264,811	$ (955,613)	$ (295)
Ending Balance (in shares) at Sep. 27, 2014		67,211,626			22,474,331