Discontinued Operations Net Income (Loss) from Bakery Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Jan. 03, 2016	Jun. 28, 2015	Dec. 28, 2014	Mar. 30, 2014	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of income taxes					$ 10,494	$ 5,010	$ (2,903)
Gain on disposal of discontinued operations, net of income taxes					10,669	0	0
Net income (loss) from discontinued operations					21,163	5,010	(2,903)
Proceeds from sales					204,388	161,386	149,112
Gain on sales of other assets, net	$ 59,258	$ 15,654	$ 17,483	$ 72,977	74,009	91,510	51,276
Bakery [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues					25,885	62,561	63,741
Cost of sales					(7,543)	(45,710)	(58,809)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)					18,342	16,851	4,932
General and administrative					(1,093)	(2,525)	(2,248)
Depreciation and amortization					(2,297)	(5,471)	(6,968)
Other expense, net					(19)	(126)	(256)
Income (loss) from discontinued operations before income taxes					14,933	8,729	(4,540)
(Provision for) benefit from income taxes					(4,439)	(3,719)	1,903
Income (loss) from discontinued operations, net of income taxes					10,494	5,010	(2,637)
Gain on disposal of discontinued operations before income taxes					25,529	0	0
Provision for income taxes on gain on disposal					(14,860)	0	0
Gain on disposal of discontinued operations, net of income taxes					10,669	0	0
Net income (loss) from discontinued operations					21,163	5,010	(2,637)
Severance Related Costs Associated with Discontinued Operation					791
Withdrawal from Multiemployer Defined Benefit Plan [Member] | Bakery [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss Contingency Accrual, Period Increase (Decrease)					(12,486)		13,500
Sale of Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales					10,478	17,263	18,844
Gain on sales of other assets, net					1,672	5,089	4,609
Sale of Other Assets [Member] | Bakery [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales					50	52	114
Gain on sales of other assets, net					$ 32	$ 69	$ 96