Discontinued Operations (Loss) Income from Discontinued Operations (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 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	$ 231	$ 0	$ 9,588
Gain on disposal of discontinued operations before income taxes				0	27,338
Gain on disposal of discontinued operations, net of income taxes		0	15,139	0	15,139
Net income from discontinued operations		0	15,370	0	24,727
Proceeds from sale				45,078	38,697
Gain (loss) on sales		1,924	15,654	10,350	14,849
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			2,106		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		791
Disposal Group, Including Discontinued Operation, Consideration							$ 78,500
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues			11,408		25,885
Cost of sales			(9,175)		(7,336)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)			2,233		18,549
General and administrative			(483)		(1,097)
Depreciation and amortization			(962)		(2,297)
Other expense, net			(12)		(34)
Income from discontinued operations before income taxes			776		15,121
Provision for income taxes			(545)		(5,533)
Income from discontinued operations, net of income taxes			231		9,588
Gain on disposal of discontinued operations before income taxes			27,338		27,338
Provision for income taxes on gain on disposal			(12,199)		(12,199)
Gain on disposal of discontinued operations, net of income taxes			15,139		15,139
Net income from discontinued operations			15,370		24,727
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		3,893	905	5,463	2,598
Gain (loss) on sales		$ 1,379	149	1,457	511
Sale of Other Assets [Member] | Discontinued Operations [Member] | Bakery [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Proceeds from sale			41		50
Gain (loss) on sales			$ 40		$ 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	$ 996			$ 5,265