Quarterly Unaudited Financial Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 201,994us-gaap_SalesRevenueNet	$ 234,101us-gaap_SalesRevenueNet	$ 234,960us-gaap_SalesRevenueNet	$ 191,032us-gaap_SalesRevenueNet	$ 188,835us-gaap_SalesRevenueNet	$ 217,412us-gaap_SalesRevenueNet	$ 224,519us-gaap_SalesRevenueNet	$ 196,801us-gaap_SalesRevenueNet	$ 862,087us-gaap_SalesRevenueNet	$ 827,567us-gaap_SalesRevenueNet	$ 790,058us-gaap_SalesRevenueNet
Gross profit	28,480us-gaap_GrossProfit	41,578us-gaap_GrossProfit	40,123us-gaap_GrossProfit	29,864us-gaap_GrossProfit	35,452us-gaap_GrossProfit	41,762us-gaap_GrossProfit	44,706us-gaap_GrossProfit	36,177us-gaap_GrossProfit	140,045us-gaap_GrossProfit	158,097us-gaap_GrossProfit	149,560us-gaap_GrossProfit
Income (loss) from operations	(103,872)us-gaap_OperatingIncomeLoss	18,392us-gaap_OperatingIncomeLoss	14,730us-gaap_OperatingIncomeLoss	333us-gaap_OperatingIncomeLoss	6,153us-gaap_OperatingIncomeLoss	(6,152)us-gaap_OperatingIncomeLoss	16,283us-gaap_OperatingIncomeLoss	5,196us-gaap_OperatingIncomeLoss	(70,417)us-gaap_OperatingIncomeLoss	21,480us-gaap_OperatingIncomeLoss	40,261us-gaap_OperatingIncomeLoss
Interest expense	3,433us-gaap_InterestExpense	3,657us-gaap_InterestExpense	3,691us-gaap_InterestExpense	3,640us-gaap_InterestExpense	3,811us-gaap_InterestExpense	3,828us-gaap_InterestExpense	3,690us-gaap_InterestExpense	11,160us-gaap_InterestExpense	14,421us-gaap_InterestExpense	22,489us-gaap_InterestExpense	18,582us-gaap_InterestExpense
(Loss) income from continuing operations	(95,708)	9,571	6,431	(2,086)	4,009	(13,727)	7,732	(3,643)	(81,792)	(5,629)	12,650
Loss from discontinued operations	(1)	(31)	0	0	0	0	0	(4)	(32)	(4)	(5)
Net (loss) income	$ (95,709)us-gaap_NetIncomeLoss	$ 9,540us-gaap_NetIncomeLoss	$ 6,431us-gaap_NetIncomeLoss	$ (2,086)us-gaap_NetIncomeLoss	$ 4,009us-gaap_NetIncomeLoss	$ (13,727)us-gaap_NetIncomeLoss	$ 7,732us-gaap_NetIncomeLoss	$ (3,647)us-gaap_NetIncomeLoss	$ (81,824)us-gaap_NetIncomeLoss	$ (5,633)us-gaap_NetIncomeLoss	$ 12,645us-gaap_NetIncomeLoss
(Loss) income per share from continuing operations:
Basic (in dollars per share)	$ (3.08)	$ 0.31	$ 0.21	$ (0.07)	$ 0.13	$ (0.44)	$ 0.25	$ (0.12)	$ (2.63)	$ (0.18)	$ 0.41
Diluted (in dollars per share)	$ (3.08)	$ 0.31	$ 0.21	$ (0.07)	$ 0.13	$ (0.44)	$ 0.25	$ (0.12)	$ (2.63)	$ (0.18)	$ 0.41
Loss per share from discontinued operations:
Basic (in dollars per share)	$ 0.00	$ (0.01)	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Diluted (in dollars per share)	$ 0.00	$ (0.01)	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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