Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net Earnings	$ 19,767	$ 19,843
Adjustments to reconcile Net Earnings to Net Cash Provided by Operating Activities:
Depreciation	8,655	8,155
Amortization	224	1,036
Deferred Income Taxes	(1,633)	(1,754)
Share-Based Compensation Expense	4,426	4,889
Allowance for Doubtful Accounts and Returns	606	1,246
Loss on Sale of Business	149	0
Other, Net	(63)	(74)
Changes in Operating Assets and Liabilities:
Receivables	(12,314)	(1,717)
Inventories	(3,941)	(11,002)
Accounts Payable	(389)	(3,440)
Employee Compensation and Benefits	(5,788)	(5,970)
Other Current Liabilities	(3,936)	(3,174)
Income Taxes	6,743	1,668
Other Assets and Liabilities	(65)	(3,133)
Net Cash Provided by Operating Activities	12,441	6,573
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(14,769)	(7,594)
Proceeds from Disposals of Property, Plant and Equipment	427	190
Proceeds from Sale of Business	285	0
Decrease (Increase) in Restricted Cash	120	(18)
Net Cash Used in Investing Activities	(13,937)	(7,422)
FINANCING ACTIVITIES
Payment of Long-Term Debt	(3,444)	(3,429)
Purchases of Common Stock	(12,762)	(14,229)
Proceeds from Issuance of Common Stock	1,196	802
Excess Tax Benefit on Stock Plans	246	669
Dividends Paid	(7,058)	(7,348)
Net Cash Used in Financing Activities	(21,822)	(23,535)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(37)	(940)
Net Decrease in Cash and Cash Equivalents	(23,355)	(25,324)
Cash and Cash Equivalents at Beginning of Period	51,300	92,962
Cash and Cash Equivalents at End of Period	27,945	67,638
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Income Taxes	3,174	8,702
Cash Paid for Interest	505	718
Supplemental Non-cash Investing and Financing Activities:
Capital Expenditures in Accounts Payable	$ 1,538	$ 3,652