Discontinued Operations (Details) - USD ($) $ in Thousands	7 Months Ended	12 Months Ended
	Jan. 03, 2016	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	May 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Gain on disposal of discontinued operations before income taxes		$ 0	$ 0	$ 25,529
Disposal Group, Including Discontinued Operation, Assets		2,235	4,800
Bakery
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Percentage of Membership Interests Sold					100.00%
Capital Expenditure, Discontinued Operations				2,693
Disposal Group, Including Discontinued Operation, Assets	$ 0	0		0
Disposal Group, Including Discontinued Operation, Liabilities	0		0	0
Bakery | Cost of Sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Discontinued Operation, Amount of Continuing Cash Flows after Disposal	$ 8,358	$ 6,686	$ 10,176
Disposal Group, Not Discontinued Operations | Bakery
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Disposal Group, Including Discontinued Operation, Consideration					$ 0
Discontinued Operations | Bakery
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Disposal Group, Including Discontinued Operation, Consideration					$ 78,500
Gain on disposal of discontinued operations before income taxes				25,529
Provision for income taxes on gain on disposal				$ 14,860