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Consolidated Statements Of Operations (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements Of Operations [Abstract]
Net sales	$ 73,840	$ 68,256	$ 221,610	$ 167,140
Cost of sales	43,089	42,880	130,593	103,607
Gross profit	30,751	25,376	91,017	63,533
Operating expenses	22,583	18,865	62,979	49,577
Operating income	8,168	6,511	28,038	13,956
Interest expense	899	877	2,684	2,683
Interest capitalized	(18)	(49)	(92)	(98)
Extinguishment of debt			546
Income before income tax	7,287	5,683	24,900	11,371
Income tax expense	2,669	2,072	9,263	4,290
Net income	$ 4,618	$ 3,611	$ 15,637	$ 7,081
Earnings per common share-basic	$ 0.17	$ 0.13	$ 0.57	$ 0.26
Earnings per common share-assuming dilution	$ 0.16	$ 0.13	$ 0.56	$ 0.26
Weighted average shares outstanding-basic	27,575	27,398	27,551	27,362
Weighted average shares outstanding-assuming dilution	27,993	27,663	27,842	27,643

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Reference 6: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Statement of Financial Accounting Standard (FAS)



-Number 128



-Paragraph 8



-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.







Reference 7: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Emerging Issues Task Force (EITF)



-Number 07-4



-Paragraph 4



-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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