Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
OPERATING ACTIVITIES
Net Earnings	$ 5,026us-gaap_NetIncomeLoss	$ 5,795us-gaap_NetIncomeLoss
Adjustments to reconcile Net Earnings to Net Cash Used in Operating Activities:
Depreciation	4,122us-gaap_Depreciation	4,427us-gaap_Depreciation
Amortization	520us-gaap_AmortizationOfIntangibleAssets	611us-gaap_AmortizationOfIntangibleAssets
Deferred Income Taxes	205	3,874
Share-Based Compensation Expense	2,707us-gaap_ShareBasedCompensation	1,540us-gaap_ShareBasedCompensation
Allowance for Doubtful Accounts and Returns	139us-gaap_ProvisionForDoubtfulAccounts	429us-gaap_ProvisionForDoubtfulAccounts
Other, Net	(45)us-gaap_OtherNoncashIncomeExpense	(9)us-gaap_OtherNoncashIncomeExpense
Changes in Operating Assets and Liabilities:
Receivables	16,160	(4,123)
Inventories	(9,529)us-gaap_IncreaseDecreaseInInventories	(7,292)us-gaap_IncreaseDecreaseInInventories
Accounts Payable	(3,405)	1,648
Employee Compensation and Benefits	(8,895)	(4,707)
Other Current Liabilities	(5,761)	(3,370)
Income Taxes	(2,267)	(2,310)
Other Assets and Liabilities	(1,099)	(426)
Net Cash Used in Operating Activities	(2,122)	(3,913)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(4,129)	(3,511)
Proceeds from Disposals of Property, Plant and Equipment	86	40
Increase in Restricted Cash	(13)	(2)
Net Cash Used in Investing Activities	(4,056)	(3,473)
FINANCING ACTIVITIES
Payments of Short-Term Debt	0us-gaap_RepaymentsOfShortTermDebt	(1,500)us-gaap_RepaymentsOfShortTermDebt
Payment of Long-Term Debt	(2,000)	(2,006)
Purchases of Common Stock	(4,135)	(3,556)
Proceeds from Issuance of Common Stock	550	226
Excess Tax Benefit on Stock Plans	648	169
Dividends Paid	(3,690)us-gaap_PaymentsOfDividends	(3,490)us-gaap_PaymentsOfDividends
Net Cash Used in Financing Activities	(8,627)	(10,157)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(1,333)	(41)
Net Decrease in Cash and Cash Equivalents	(16,138)	(17,584)
Cash and Cash Equivalents at Beginning of Period	92,962	80,984
Cash and Cash Equivalents at End of Period	76,824	63,400
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Income Taxes	3,973us-gaap_IncomeTaxesPaid	743us-gaap_IncomeTaxesPaid
Cash Paid for Interest	338us-gaap_InterestPaid	419us-gaap_InterestPaid
Supplemental Non-cash Investing and Financing Activities:
Capital Expenditures in Accounts Payable	$ 901	$ 861

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.