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Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net sales	$ 102,825	$ 84,074
Cost of products sold	76,151	62,688
Gross profit	26,674	21,386
Selling, general and administrative expenses	11,446	10,727
Operating income	15,228	10,659
Other income	188	111
Other expense	(34)	(142)
Income before income taxes	15,382	10,628
Income taxes	5,141	3,509
Net income	$ 10,241	$ 7,119
Earnings per share (in Dollars per share)	$ 0.49	$ 0.34
Cash dividends paid per share (in Dollars per share)	$ 0.090	$ 0.084
Average shares outstanding (in Shares)	20,990,893	20,984,893

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