Income Taxes Income Taxes - Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed expected tax expense	$ 57,287	$ 72,375	$ 95,303
State income taxes, net of federal benefit	5,017	7,124	11,226
Section 199 qualified domestic production deduction	619	4,830	5,306
Change valuation allowance	507	254	1
Biofuel Tax Refunds	(9,342)	0	0
Other, net	1,861	1,092	1,652
Income Tax Expense (Benefit)	$ 54,711	$ 76,015	$ 102,876