Acquisitions (Details) (USD $)	3 Months Ended												12 Months Ended			0 Months Ended	2 Months Ended	12 Months Ended			0 Months Ended	7 Months Ended	12 Months Ended	0 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 24, 2011	Jun. 25, 2011	Mar. 26, 2011	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Nov. 08, 2013 Fresh Frozen Foods	Dec. 28, 2013 Fresh Frozen Foods	Dec. 28, 2013 Fresh Frozen Foods	Nov. 08, 2013 Fresh Frozen Foods Customer relationships	Nov. 08, 2013 Fresh Frozen Foods Trade name	May 28, 2013 WVFC	Dec. 28, 2013 WVFC	Dec. 28, 2013 WVFC	May 28, 2013 WVFC Maximum
Acquisition
Maximum additional purchase price consideration for meeting certain performance thresholds																$ 3,000,000					$ 3,000,000
Period following the closing over which performance thresholds are to be met for additional purchase price consideration																								7 years
Acquisition costs included in selling, general and administrative expenses																		1,100,000					300,000
Net revenues	58,852,000	54,514,000	53,677,000	48,537,000	43,542,000	46,601,000	48,016,000	47,020,000	44,464,000	37,518,000	43,609,000	36,641,000	215,580,000	185,179,000	162,232,000		8,900,000					14,100,000
Purchase price paid as:
Cash																38,375,000					9,300,000
Net working capital adjustment																400,000
Cash and borrowings on revolving line of credit																					8,472,000
Holdback consideration																					800,000
Contingent consideration																2,653,000					2,400,000
Total purchase price																41,429,000					11,672,000
Fair value of net assets acquired:
Current assets																10,774,000
Inventory																					1,272,000
Property and equipment																8,424,000					3,335,000
Deferred tax assets																235,000
Identifiable intangible assets																20,000,000			10,487,000	9,475,000	3,940,000
Current liabilities																(6,252,000)					(22,000)
Long-term capital lease obligation																(15,000)
Total fair value of net assets acquired																33,128,000					8,525,000
Excess purchase price over fair value of net assets acquired (goodwill)																$ 8,301,000					$ 3,147,000
Estimated useful life																12 years					10 years