CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 281,123	$ 273,814	$ 566,221	$ 559,413
Cost of sales	170,470	171,152	331,197	333,070
Gross profit	110,653	102,662	235,024	226,343
Operating expenses:
Selling expense	75,711	74,196	152,549	149,415
General and administrative expense	18,446	30,124	30,680	46,411
Research and development expense	6,930	8,498	14,403	17,695
Total operating expenses	101,087	112,818	197,632	213,521
Income (loss) from operations	9,566	(10,156)	37,392	12,822
Other expense, net	(4,571)	(3,427)	(887)	(4,807)
Income (loss) before income taxes	4,995	(13,583)	36,505	8,015
Provision for income taxes	2,196	45,483	1,904	54,263
Net income (loss)	2,799	(59,066)	34,601	(46,248)
Dividends on convertible preferred stock	2,625	2,625	5,250	5,250
Net income (loss) allocable to common shareholders	$ 174	$ (61,691)	$ 29,351	$ (51,498)
Earnings (loss) per common share:
Basic	$ 0.00	$ (0.96)	$ 0.45	$ (0.80)
Diluted	$ 0.00	$ (0.96)	$ 0.41	$ (0.80)
Weighted-average common shares outstanding:
Basic	65,060	64,425	65,021	64,365
Diluted	65,112	64,425	84,950	64,365