Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 862,087us-gaap_SalesRevenueNet	$ 827,567us-gaap_SalesRevenueNet	$ 790,058us-gaap_SalesRevenueNet
Cost of sales	722,042us-gaap_CostOfRevenue	669,470us-gaap_CostOfRevenue	640,498us-gaap_CostOfRevenue
Gross profit	140,045us-gaap_GrossProfit	158,097us-gaap_GrossProfit	149,560us-gaap_GrossProfit
Selling, general, and administrative expense	102,492	113,457	104,671
Intangible asset impairment	107,970	23,160	4,628
(Loss) income from operations	(70,417)us-gaap_OperatingIncomeLoss	21,480us-gaap_OperatingIncomeLoss	40,261us-gaap_OperatingIncomeLoss
Interest expense	14,421us-gaap_InterestExpense	22,489us-gaap_InterestExpense	18,582us-gaap_InterestExpense
Other income	(88)us-gaap_OtherIncome	(177)us-gaap_OtherIncome	(488)us-gaap_OtherIncome
(Loss) income before taxes	(84,750)	(832)	22,167
(Benefit of) provision for income taxes	(2,958)us-gaap_IncomeTaxExpenseBenefit	4,797us-gaap_IncomeTaxExpenseBenefit	9,517us-gaap_IncomeTaxExpenseBenefit
(Loss) income from continuing operations	(81,792)	(5,629)	12,650
Discontinued operations:
Loss before taxes	(51)	(7)	(289)
Benefit of income taxes	(19)	(3)	(284)
Loss from discontinued operations	(32)	(4)	(5)
Net (loss) income	$ (81,824)us-gaap_NetIncomeLoss	$ (5,633)us-gaap_NetIncomeLoss	$ 12,645us-gaap_NetIncomeLoss
Net earnings per share – Basic:
(Loss) income from continuing operations (in dollars per share)	$ (2.63)	$ (0.18)	$ 0.41
Loss from discontinued operations (in dollars per share)	$ 0.00	$ 0.00	$ 0.00
Net (loss) income (in dollars per share)	$ (2.63)us-gaap_EarningsPerShareBasic	$ (0.18)us-gaap_EarningsPerShareBasic	$ 0.41us-gaap_EarningsPerShareBasic
Weighted average shares outstanding – Basic (in shares)	31,066	30,930	30,752
Net earnings per share – Diluted:
(Loss) income from continuing operations (in dollars per share)	$ (2.63)	$ (0.18)	$ 0.41
Loss from discontinued operations (in dollars per share)	$ 0.00	$ 0.00	$ 0.00
Net (loss) income (in dollars per share)	$ (2.63)us-gaap_EarningsPerShareDiluted	$ (0.18)us-gaap_EarningsPerShareDiluted	$ 0.41us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding – Diluted (in shares)	31,066	30,930	30,857

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The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.4)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 4

-Article 7

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

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.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 4

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34747878&loc=d3e3636-108311

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

+ Details

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- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

+ Details

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Balance Type:	na
Period Type:	duration