Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Changes in accumulated other comprehensive loss, net of tax
Balance at beginning of period	$ (43,975)	$ (27,220)
Amounts reclassified from other comprehensive loss	292	189
Balance at end of period	(43,683)	(27,031)
Accumulated other comprehensive loss, net of tax
Earnings (loss) from continuing operations before income taxes	280	(6,803)
Tax provision	76us-gaap_IncomeTaxExpenseBenefit	(2,357)us-gaap_IncomeTaxExpenseBenefit
Net earnings (loss)	442	(4,900)
Cost of sales	(71,300)us-gaap_CostOfGoodsSold	(69,298)us-gaap_CostOfGoodsSold
Selling and administrative	9,358	12,867
Accumulated Defined Benefit Plans Adjustment \| Reclassification out of Accumulated Other Comprehensive Income
Accumulated other comprehensive loss, net of tax
Amortization of prior service cost, net	(355)	(293)
Amortization of actuarial gains, net	822	598
Earnings (loss) from continuing operations before income taxes	467	305
Tax provision	175	116
Net earnings (loss)	292	189
Cost of sales	(49)	(84)
Selling and administrative	$ 341	$ 273

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Total costs related to goods produced and sold during the reporting period.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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