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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement
Net sales	$ 50,644us-gaap_SalesRevenueNet	$ 47,702us-gaap_SalesRevenueNet
Cost of goods sold	40,439us-gaap_CostOfGoodsAndServicesSold	38,864us-gaap_CostOfGoodsAndServicesSold
Gross profit	10,205us-gaap_GrossProfit	8,838us-gaap_GrossProfit
Selling, general and administrative expenses	5,951us-gaap_SellingGeneralAndAdministrativeExpense	6,070us-gaap_SellingGeneralAndAdministrativeExpense
Operating income	4,254us-gaap_OperatingIncomeLoss	2,768us-gaap_OperatingIncomeLoss
Interest income	117us-gaap_InvestmentIncomeInterest	122us-gaap_InvestmentIncomeInterest
Income before income taxes	4,371us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2,890us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax provision	1,442us-gaap_IncomeTaxExpenseBenefit	912us-gaap_IncomeTaxExpenseBenefit
Net income	$ 2,929us-gaap_NetIncomeLoss	$ 1,978us-gaap_NetIncomeLoss
Earnings per share
Basic (in dollars per share)	$ 0.08us-gaap_EarningsPerShareBasic	$ 0.05us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.08us-gaap_EarningsPerShareDiluted	$ 0.05us-gaap_EarningsPerShareDiluted
Dividends paid per share (in dollars per share)	$ 0.04us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.03us-gaap_CommonStockDividendsPerShareCashPaid
Average shares outstanding
Basic (in shares)	37,028us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	36,958us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares)	37,264us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	37,255us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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Aggregate dividends paid during the period for each share of common stock outstanding.

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