Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES
Net Earnings	$ 11,721	$ 10,266
Adjustments to reconcile Net Earnings to Net Cash Provided by Operating Activities:
Depreciation	8,664	9,179
Amortization	1,704	1,563
Impairment of Intangible Assets	1,805	0
Deferred Income Taxes	3,249	(1,539)
Stock-Based Compensation Expense	2,490	1,679
Allowance for Doubtful Accounts and Returns	642	856
Other, Net	385	(14)
Changes in Operating Assets and Liabilities, Excluding the Impact of Acquisitions:
Accounts Receivable	(12,593)	7,684
Inventories	(10,273)	(9,775)
Accounts Payable	14,515	8,013
Employee Compensation and Benefits	(6,105)	(5,606)
Other Current Liabilities	(538)	1,255
Income Taxes	116	3,160
Other Assets and Liabilities	(3,072)	(2,341)
Net Cash Provided by Operating Activities	12,710	24,380
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(4,023)	(4,195)
Proceeds from Disposals of Property, Plant and Equipment	255	468
Acquisition of Businesses, Net of Cash Acquired	(2,916)	(26)
Net Cash Used for Investing Activities	(6,684)	(3,753)
FINANCING ACTIVITIES
Change in Short-Term Borrowings, Net	(35)	(7)
Payment of Long-Term Debt	(12,268)	(2,055)
Issuance of Long-Term Debt	20,000	0
Purchases of Common Stock	(9,159)	0
Proceeds from Issuance of Common Stock	1,782	3,093
Tax Benefit on Stock Plans	739	800
Dividends Paid	(6,471)	(5,284)
Net Cash Used for Financing Activities	(5,412)	(3,453)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	1,308	(747)
Net Increase in Cash and Cash Equivalents	1,922	16,427
Cash and Cash Equivalents at Beginning of Period	39,529	18,062
Cash and Cash Equivalents at End of Period	41,451	34,489
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Income Taxes	3,870	3,675
Cash Paid for Interest	815	793
Supplemental Non-cash Investing and Financing Activities:
Capital Expenditures Funded Through Capital Leases	1,289	1,924
Collateralized Borrowings Incurred for Operating Lease Equipment	274	691
Notes Payable Related to Water Star, Inc. Acquisition	$ 1,500	$ 0