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Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 106,415	$ 92,583	$ 198,872	$ 195,408
Cost of products sold	79,934	69,842	151,167	145,993
Gross profit	26,481	22,741	47,705	49,415
Selling, general and administrative expenses	12,964	11,247	25,931	22,693
Operating income	13,517	11,494	21,774	26,722
Other income	153	316	272	504
Other expense	(174)	(223)	(323)	(257)
Income before income taxes	13,496	11,587	21,723	26,969
Income taxes	4,328	4,019	6,737	9,160
Net income	$ 9,168	$ 7,568	$ 14,986	$ 17,809
Earnings per share (in Dollars per share)	$ 0.43	$ 0.36	$ 0.71	$ 0.85
Cash dividends paid per share (in Dollars per share)	$ 0.100	$ 0.100	$ 0.200	$ 0.190
Average shares outstanding (in Shares)	20,996,893	20,990,893	20,996,893	20,990,893

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