Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
OPERATING ACTIVITIES
Net Earnings	$ 21,449	$ 17,791
Adjustments to reconcile Net Earnings to Net Cash Provided by Operating Activities:
Depreciation	12,800	13,668
Amortization	2,533	2,356
Impairment of Intangible Assets	1,805	0
Deferred Income Taxes	945	(2,119)
Stock-Based Compensation Expense	3,569	2,471
Allowance for Doubtful Accounts and Returns	747	1,206
Other, Net	400	(3)
Changes in Operating Assets and Liabilities, Excluding the Impact of Acquisitions:
Accounts Receivable	(2,672)	4,486
Inventories	(17,461)	(12,561)
Accounts Payable	11,277	2,620
Employee Compensation and Benefits	134	(311)
Other Current Liabilities	2,433	1,167
Income Taxes	1,628	(339)
Other Assets and Liabilities	(3,568)	(248)
Net Cash Provided by Operating Activities	36,019	30,184
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(7,663)	(6,651)
Proceeds from Disposals of Property, Plant and Equipment	485	566
Acquisition of Businesses, Net of Cash Acquired	(2,916)	(26)
Net Cash Used for Investing Activities	(10,094)	(6,111)
FINANCING ACTIVITIES
Change in Short-Term Borrowings, Net	(35)	(7)
Payment of Long-Term Debt	(18,099)	(3,194)
Issuance of Long-Term Debt	20,000	0
Purchases of Common Stock	(17,134)	(3,153)
Proceeds from Issuance of Common Stock	3,257	4,707
Tax Benefit on Stock Plans	801	1,281
Dividends Paid	(9,660)	(7,950)
Net Cash Used for Financing Activities	(20,870)	(8,316)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(311)	(89)
Net Increase in Cash and Cash Equivalents	4,744	15,668
Cash and Cash Equivalents at Beginning of Period	39,529	18,062
Cash and Cash Equivalents at End of Period	44,273	33,730
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Income Taxes	8,110	9,872
Cash Paid for Interest	1,450	1,143
Supplemental Non-cash Investing and Financing Activities:
Capital Expenditures Funded Through Capital Leases	2,621	2,599
Collateralized Borrowings Incurred for Operating Lease Equipment	194	582
Notes Payable Related to Water Star, Inc. Acquisition	$ 1,500	$ 0