Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Net sales	$ 49,633	$ 64,212	$ 99,713	$ 128,061
Cost of sales	44,640	45,830	85,026	90,942
Gross profit	4,993	18,382	14,687	37,119
Operating expenses:
Selling and commissions	4,620	3,452	9,081	6,547
Research and development	1,392	1,481	2,635	2,301
General and administrative	3,801	3,015	7,710	6,745
Total selling and commissions, research and development, general and administrative	9,813	7,948	19,426	15,593
Business development	9	169	509	244
Certain transaction costs (Note 3)		416		416
Total operating expenses	9,746	8,533	19,859	16,253
Operating income	(4,753)	9,849	(5,172)	20,866
Other expense (income):
Interest expense	7,859	6,069	15,543	12,063
Other (income)/expense, net	(42)	(685)	(113)	(1,472)
Total other expense, net	7,817	5,384	15,430	10,591
Income (loss) before provision for income taxes	(12,570)	4,465	(20,602)	10,275
Income tax expense	19	78	(67)	759
Net (loss) income	(12,589)	4,387	(20,535)	9,516
Previously reported
Net sales		64,235		128,084
Cost of sales		45,765		90,863
Gross profit		18,470		37,221
Operating expenses:
Selling and commissions		3,582		6,756
Research and development		1,480		2,299
General and administrative		3,237		6,962
Total selling and commissions, research and development, general and administrative		8,299		16,017
Certain transaction costs (Note 3)		416		416
Total operating expenses		8,715		16,433
Operating income		9,755		20,788
Other expense (income):
Interest expense		6,069		12,063
Other (income)/expense, net		(493)		(1,205)
Total other expense, net		5,576		10,858
Income (loss) before provision for income taxes		4,179		9,930
Income tax expense		21		702
Net (loss) income		4,158		9,228
Adjustments
Net sales		(23)		(23)
Cost of sales		65		79
Gross profit		(88)		(102)
Operating expenses:
Selling and commissions		(130)		(209)
Research and development		1		2
General and administrative		(222)		(217)
Total selling and commissions, research and development, general and administrative		(351)		(424)
Business development		169		244
Total operating expenses		(182)		(180)
Operating income		94		78
Other expense (income):
Other (income)/expense, net		(192)		(267)
Total other expense, net		(192)		(267)
Income (loss) before provision for income taxes		286		345
Income tax expense		57		57
Net (loss) income		$ 229		$ 288