CONSOLIDATED CONDENSED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Statement of Income
Net sales	$ 183,236	$ 181,086	$ 366,686	$ 357,451
Cost of sales	91,781	87,403	179,515	171,973
Gross profit	91,455	93,683	187,171	185,478
Selling and administrative expense	67,862	71,494	137,940	142,046
Research and development expense	6,797	6,441	14,478	14,123
Other expense	98	970	792	970
Total operating expenses	74,757	78,905	153,210	157,139
Income from operations	16,698	14,778	33,961	28,339
Loss on early extinguishment of debt	0	79	0	79
Amortization of debt discount	1,113	1,056	2,207	2,108
Interest expense	1,707	1,771	3,512	3,520
Income before income taxes	13,878	11,872	28,242	22,632
Provision for income taxes	5,198	4,566	10,567	8,007
Net income	$ 8,680	$ 7,306	$ 17,675	$ 14,625
Per share data:
Net Income Basic	$ 0.31	$ 0.25	$ 0.62	$ 0.50
Net Income Diluted	$ 0.30	$ 0.25	$ 0.61	$ 0.50
Weighted average common shares Basic	28,448	29,100	28,356	29,125
Weighted average common shares Diluted	28,883	29,295	28,820	29,342