Quarterly Results of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 211,909us-gaap_SalesRevenueGoodsNet	$ 239,942us-gaap_SalesRevenueGoodsNet	$ 232,990us-gaap_SalesRevenueGoodsNet	$ 169,904us-gaap_SalesRevenueGoodsNet	$ 196,431us-gaap_SalesRevenueGoodsNet	$ 227,835us-gaap_SalesRevenueGoodsNet	$ 229,861us-gaap_SalesRevenueGoodsNet	$ 172,545us-gaap_SalesRevenueGoodsNet	$ 854,745us-gaap_SalesRevenueGoodsNet	$ 826,672us-gaap_SalesRevenueGoodsNet	$ 837,140us-gaap_SalesRevenueGoodsNet
Cost of sales, excluding depreciation and amortization	183,540	202,160	193,077	146,971	171,539	188,792	190,461	149,170	725,748	699,962	701,045
Depreciation and amortization	7,833us-gaap_DepreciationAndAmortization	8,142us-gaap_DepreciationAndAmortization	8,251us-gaap_DepreciationAndAmortization	8,202us-gaap_DepreciationAndAmortization	9,542us-gaap_DepreciationAndAmortization	8,514us-gaap_DepreciationAndAmortization	8,450us-gaap_DepreciationAndAmortization	8,593us-gaap_DepreciationAndAmortization	32,428us-gaap_DepreciationAndAmortization	35,099us-gaap_DepreciationAndAmortization	34,784us-gaap_DepreciationAndAmortization
Operating (loss) income	2,293us-gaap_OperatingIncomeLoss	11,176us-gaap_OperatingIncomeLoss	10,131us-gaap_OperatingIncomeLoss	(5,010)us-gaap_OperatingIncomeLoss	(4,121)us-gaap_OperatingIncomeLoss	8,687us-gaap_OperatingIncomeLoss	9,884us-gaap_OperatingIncomeLoss	(7,432)us-gaap_OperatingIncomeLoss	18,590us-gaap_OperatingIncomeLoss	7,018us-gaap_OperatingIncomeLoss	11,355us-gaap_OperatingIncomeLoss
(Loss) income before income taxes	(20,428)	(16,775)	(4,299)	(18,579)	(13,599)	3,177	(1,859)	(27,375)	(60,081)	(39,656)	(38,491)
Net (loss) income	$ (20,485)us-gaap_NetIncomeLoss	$ (16,406)us-gaap_NetIncomeLoss	$ (3,116)us-gaap_NetIncomeLoss	$ (19,272)us-gaap_NetIncomeLoss	$ (11,482)us-gaap_NetIncomeLoss	$ 16,259us-gaap_NetIncomeLoss	$ (1,556)us-gaap_NetIncomeLoss	$ (28,116)us-gaap_NetIncomeLoss	$ (59,279)us-gaap_NetIncomeLoss	$ (24,895)us-gaap_NetIncomeLoss	$ (36,768)us-gaap_NetIncomeLoss
Interim Reporting Calendar [Abstract]
Number of fewer days in fiscal quarter	1 day			1 day
First fiscal month in fiscal quarter duration									4 weeks	4 weeks
Second fiscal month in fiscal quarter duration									4 weeks	4 weeks
Third fiscal month in fiscal quarter duration									5 weeks	5 weeks
Fiscal quarter duration		13 weeks	13 weeks	13 weeks		13 weeks	13 weeks	13 weeks

First Fiscal Month In Fiscal Quarter Duration

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Number Of Fewer Days In Fiscal Quarter

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Third Fiscal Month in Fiscal Quarter Duration

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The aggregate cost of goods produced and sold during the reporting period, excluding depreciation, depletion, and amortization.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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