Product Recall (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Product recall costs recorded													$ 0
Net revenues	$ 63,365,000	$ 66,529,000	$ 69,263,000	$ 69,855,000	$ 68,664,000	$ 69,865,000	$ 66,422,000	$ 77,607,000	$ 73,746,000.000	$ 72,556,000.000	$ 71,852,000.000	$ 67,509,000.000	269,012,000	$ 282,558,000	$ 285,663,000
Cost of revenues													236,253,000	262,221,000	232,542,000
Gross profit	5,751,000	7,924,000	10,267,000	8,817,000	7,312,000	8,700,000	8,025,000	(3,700,000)	15,176,000.000	12,926,000.000	13,456,000.000	11,563,000.000	32,759,000	20,337,000	53,121,000
Operating expenses
Selling, general and administrative expenses													34,994,000	37,559,000	34,188,000
Operating income (loss)	(18,897,000)	(1,266,000)	1,774,000	708,000	(1,645,000)	(533,000)	(2,192,000)	(22,129,000)	5,980,000.000	5,356,000.000	4,432,000.000	3,165,000.000	(17,681,000)	(26,499,000)	18,933,000
Interest expense													9,874,000	6,330,000	2,604,000
Loss before income taxes													(27,555,000)	(32,829,000)	16,329,000
Income tax benefit													(2,694,000)	12,046,000	(5,768,000)
Net loss	$ (26,389,000)	$ (2,564,000)	$ (278,000)	$ (1,018,000)	$ (2,460,000)	$ (1,737,000)	$ (1,951,000)	$ (14,635,000)	$ 3,408,000.000	$ 3,084,000.000	$ 2,472,000.000	$ 1,597,000.000	$ (30,249,000)	(20,783,000)	$ 10,561,000
Voluntary Product Recall
Cost of revenues														17,142,000
Gross profit														(17,142,000)
Operating expenses
Selling, general and administrative expenses														2,174,000
Impairment of intangible asset														9,277,000
Operating income (loss)														(28,593,000)
Interest expense														1,476,000
Loss before income taxes														(30,069,000)
Income tax benefit														11,034,000
Net loss														(19,035,000)
Total charges for the product recall														19,100,000
Incremental production costs due to utilizing co-packers														2,200,000
Recall-related insurance recoveries														4,200,000
Customer Relationships | Voluntary Product Recall
Operating expenses
Impairment of intangible asset														9,300,000
Selling, General and Administrative Expenses | Voluntary Product Recall
Operating expenses
Professional fees														$ 2,200,000