CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 3,592us-gaap_ProfitLoss	$ 3,250us-gaap_ProfitLoss
Adjustments to reconcile net earnings to net cash provided by operating activities -
Depreciation	734us-gaap_Depreciation	953us-gaap_Depreciation
Amortization	110us-gaap_AdjustmentForAmortization	54us-gaap_AdjustmentForAmortization
Bad debt expense	34us-gaap_ProvisionForDoubtfulAccounts	112us-gaap_ProvisionForDoubtfulAccounts
Deferred income taxes	(55)us-gaap_DeferredIncomeTaxExpenseBenefit	7us-gaap_DeferredIncomeTaxExpenseBenefit
Net foreign currency transaction losses	203	65
Stock-based compensation	360us-gaap_ShareBasedCompensation	338us-gaap_ShareBasedCompensation
Pension expense	937us-gaap_PensionExpense	678us-gaap_PensionExpense
Increase in cash surrender value of life insurance	(135)	(135)
Changes in operating assets and liabilities -
Accounts receivable	(683)	(5,528)
Inventories	7,822us-gaap_IncreaseDecreaseInInventories	13,422us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets	1,870	2,799
Accounts payable	(8,841)	(7,551)
Accrued liabilities and other	(5,564)	(1,309)
Accrued income taxes	1,218	1,146
Net cash provided by operating activities	1,602	8,301
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of marketable securities	(300)	(3,528)
Proceeds from maturities of marketable securities	1,715	2,416
Purchase of property, plant and equipment	(531)	(300)
Net cash provided by (used for) investing activities	884	(1,412)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(4,095)us-gaap_PaymentsOfDividends	(3,899)us-gaap_PaymentsOfDividends
Shares purchased and retired	(2,422)	(81)
Proceeds from stock options exercised	2,149	165
Proceeds from bank borrowings	31,419us-gaap_ProceedsFromBankDebt	4,815us-gaap_ProceedsFromBankDebt
Repayments of bank borrowings	(30,203)us-gaap_RepaymentsOfBankDebt	(7,824)us-gaap_RepaymentsOfBankDebt
Income tax benefits from stock-based compensation	412	14
Net cash used for financing activities	(2,740)	(6,810)
Effect of exchange rate changes on cash and cash equivalents	(128)	94
Net (decrease) increase in cash and cash equivalents	(382)	173
CASH AND CASH EQUIVALENTS at beginning of period	12,499	15,969
CASH AND CASH EQUIVALENTS at end of period	12,117	16,142
SUPPLEMENTAL CASH FLOW INFORMATION:
Income taxes paid, net of refunds	535us-gaap_IncomeTaxesPaidNet	490us-gaap_IncomeTaxesPaidNet
Interest paid	$ 18us-gaap_InterestPaid	$ 30us-gaap_InterestPaid

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