Consoldiated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING ACTIVITIES
Net Earnings	$ 40,231	$ 41,584	$ 32,713
Adjustments to Reconcile Net Earnings to Cash Provided by Operating Activities:
Depreciation	17,686	18,072	18,088
Amortization	2,560	2,800	3,330
Impairment of Intangible Assets	0	0	2,058
Deferred Income Taxes	5,622	3,166	(1,352)
Share-Based Compensation Expense	6,116	9,092	5,407
Allowance for Doubtful Accounts and Returns	1,279	1,427	1,879
Gain on Sale of Business	0	(784)	0
Other, Net	219	(126)	508
Changes in Operating Assets and Liabilities, Exluding the Impact of Acquisitions:
Receivables, Net	(7,618)	(11,811)	(4,451)
Inventories	(11,967)	(149)	(7,665)
Accounts Payable	6,120	970	4,612
Employee Compensation and Benefits	(4,178)	(3,005)	1,177
Other Current Liabilities	5,552	1,549	1,711
Income Taxes	(248)	797	1,668
U.S. Pension Plan Contributions	0	(16,731)	0
Other Assets and Liabilities	(1,560)	715	(2,774)
Net Cash Provided by Operating Activities	59,814	47,566	56,909
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(14,775)	(15,623)	(13,902)
Proceeds form Disposals of Property, Plant and Equipment	120	1,028	601
Acquisition of Businesses, Net of Cash Acquired	(750)	(750)	(2,917)
Proceeds from Sale of Business	4,261	1,014	0
(Increase) Decrease in Restricted Cash	(253)	3,089	(3,279)
Net Cash Used for Investing Activities	(11,397)	(11,242)	(19,497)
FINANCING ACTIVITIES
Change in Short-Term Borrowings, Net	1,500	0	0
Payments of Long-Term Debt	(1,096)	(2,986)	(19,272)
Issuance of Long-Term Debt	0	0	20,000
Purchases of Common Stock	(22,157)	(25,343)	(17,603)
Proceeds from Issuance of Common Stock	8,313	4,167	4,214
Excess Tax Benefit on Stock Plans	5,178	2,047	1,266
Dividends Paid	(13,233)	(12,817)	(12,852)
Net Cash Used for Financing Activities	(21,495)	(34,932)	(24,247)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	122	209	(355)
NET INCREASE IN CASH AND CASH EQUIVALENTS	27,044	1,601	12,810
Cash and Cash Equivalents at Beginning of Year	53,940	52,339	39,529
CASH AND CASH EQUIVALENTS AT END OF YEAR	80,984	53,940	52,339
Cash Paid During the Year for:
Income Taxes	13,458	11,563	13,158
Interest	1,602	2,375	2,059
Supplemental Non-Cash Investing and Financing Activities:
Capital Expenditures Funded Through Capital Leases	601	1,526	2,893
Capital Expenditures in Accounts Payable	1,090	1,582	2,669
Notes Payable Related to Water Star, Inc. Acquisition	$ 0	$ 0	$ 1,500