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Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 91,626	$ 90,215	$ 287,034	$ 266,448
Cost of products sold	69,796	67,748	215,789	198,346
Gross profit	21,830	22,467	71,245	68,102
Selling, general and administrative expenses	11,727	10,941	34,420	32,436
Operating income	10,103	11,526	36,825	35,666
Other income	161	78	665	299
Other expense	(123)	(402)	(380)	(720)
Income before income taxes	10,141	11,202	37,110	35,245
Income taxes	3,435	3,547	12,595	11,546
Net income	$ 6,706	$ 7,655	$ 24,515	$ 23,699
Earnings per share (in Dollars per share)	$ 0.32	$ 0.37	$ 1.17	$ 1.13
Cash dividends paid per share (in Dollars per share)	$ 0.100	$ 0.090	$ 0.290	$ 0.264
Average shares outstanding (in Shares)	20,996,828	20,989,882	20,992,886	20,986,574

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