Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements Of Income
Net sales	$ 186,048	$ 173,502	$ 354,881	$ 319,719
Cost of sales	143,989	135,944	274,943	248,502
Gross profit	42,059	37,558	79,938	71,217
Selling, general and administrative expenses	24,149	21,714	46,485	43,089
Operating profit	17,910	15,844	33,453	28,128
Interest expense, net	61	58	119	140
Income before income taxes	17,849	15,786	33,334	27,988
Provision for income taxes	6,884	6,194	12,982	11,068
Net income	$ 10,965	$ 9,592	$ 20,352	$ 16,920
Net income per common share:
Basic	$ 0.49	$ 0.43	$ 0.91	$ 0.77
Diluted	$ 0.49	$ 0.43	$ 0.91	$ 0.76
Weighted average common shares outstanding:
Basic	22,270	22,121	22,244	22,112
Diluted	22,458	22,276	22,417	22,262