CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements of Earnings [Abstract]
Net Sales	$ 173,712	$ 172,591
Cost of Sales	98,393	100,660
Gross Profit	75,319	71,931
Operating Expense:
Research and Development Expense	7,270	6,280
Selling and Administrative Expense	59,714	57,459
Total Operating Expense	66,984	63,739
Profit from Operations	8,335	8,192
Other Income (Expense):
Interest Income	310	68
Interest Expense	(712)	(415)
Net Foreign Currency Transaction (Losses) Gains	(230)	527
Other Income, Net	35	31
Total Other (Expense) Income, Net	(597)	211
Profit Before Income Taxes	7,738	8,403
Income Tax Expense	2,414	2,537
Net Earnings	$ 5,324	$ 5,866
Earnings per Share:
Basic	$ 0.28	$ 0.31
Diluted	$ 0.28	$ 0.30
Weighted Average Shares Outstanding:
Basic	18,722,156	18,963,177
Diluted	19,228,272	19,556,036
Cash Dividend Declared per Common Share	$ 0.17	$ 0.17