Discontinued Operations (Loss) Income from Discontinued Operations (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 28, 2015	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015	Jan. 03, 2016	May 31, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Income from discontinued operations, net of income taxes		$ 0	$ (417)	$ 0	$ 9,171
Gain on disposal of discontinued operations before income taxes				0	27,526
Gain on disposal of discontinued operations, net of income taxes		0	(322)	0	14,817
Net income from discontinued operations		0	(739)	0	23,988
Proceeds from sale				173,849	46,357
Gain (loss) on sales		37,756	(98)	48,106	14,751
Bakery [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of Membership Interests Sold							100.00%
Disposal Group, Including Discontinued Operation, Assets		0		0		$ 0
Disposal Group, Including Discontinued Operation, Liabilities		0		0		$ 0
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Capital Expenditure, Discontinued Operations					2,693
Discontinued Operations [Member] | Bakery [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Severance Related Costs Associated with Discontinued Operation					791
Disposal Group, Including Discontinued Operation, Consideration							$ 78,500
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues			0		25,885
Cost of sales			(207)		(7,543)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)			(207)		18,342
Disposal Group, Including Discontinued Operation, General and Administrative (Expense) Income			4		(1,093)
Depreciation and amortization			0		(2,297)
Disposal Group, Including Discontinued Operation, Other Income (Expense)			15		(19)
Income from discontinued operations before income taxes			(188)		14,933
Provision for income taxes			(229)		(5,762)
Income from discontinued operations, net of income taxes			(417)		9,171
Gain on disposal of discontinued operations before income taxes			188		27,526
Provision for income taxes on gain on disposal			(510)		(12,709)
Gain on disposal of discontinued operations, net of income taxes			(322)		14,817
Net income from discontinued operations			(739)		23,988
Discontinued Operations [Member] | Withdrawal from Multiemployer Defined Benefit Plan [Member] | Bakery [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Withdrawal Obligation, Period Increase (Decrease)					(12,486)
Sale of Other Assets [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Proceeds from sale		4,006	4,576	9,469	7,174
Gain (loss) on sales		$ 2,543	$ 1,169	4,000	1,680
Sale of Other Assets [Member] | Discontinued Operations [Member] | Bakery [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Proceeds from sale					50
Gain (loss) on sales					$ 32
Cost of Sales [Member] | Bakery [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Amount of Continuing Cash Flows after Disposal	$ 4,699			$ 7,718