Income Taxes (Reconciliation of Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Income taxes at federal statutory rate	$ 40,553	$ 45,820	$ 41,151
State income taxes, net of federal income tax benefit	5,828	3,925	2,558
Other	(2,236)	(1,342)	(1,687)
Provision for income taxes	$ 44,145	$ 48,403	$ 42,022
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Percent	38.10%	37.00%	35.70%