Product Recall (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Net revenues	$ 69,855	$ 77,607
Cost of revenues	61,038	81,307
Gross profit	8,817	(3,700)
Operating expenses
Selling, general and administrative expenses	8,109	9,152
Impairment of intangible asset		9,277
Operating loss	708	(22,129)
Loss before income taxes	(1,648)	(22,859)
Income tax benefit	630	8,224
Net loss (loss)	$ (1,018)	(14,635)
Voluntary Product Recall
Cost of revenues		15,260
Gross profit		(15,260)
Operating expenses
Selling, general and administrative expenses		233
Impairment of intangible asset		9,277
Operating loss		(24,770)
Loss before income taxes		(24,770)
Income tax benefit		8,882
Net loss (loss)		(15,888)
Actual charges on the product recall		4,900
Additional product recall costs		10,400
Customer Relationships | Voluntary Product Recall
Operating expenses
Impairment of intangible asset		$ 9,300