Shareholders' Equity Repurchase of Common Stock (Details) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount repurchased under Board approved share repurchase program	$ 45,044,000	$ 40,037,000	$ 30,023,000
Total amount repurchased	46,492,000	42,072,000	34,892,000
Authorized repurchase amount	235,000,000
Time-Based Stock Awards And Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Acquired Through Tax Withholding Restricted Stock	$ 1,448,000	$ 2,035,000	$ 4,869,000