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CONDENSED STATEMENTS OF OPERATIONS (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Sales, net $ 7,975,971 $ 7,448,733 $ 17,723,603 $ 15,914,350
Cost of sales        
Cost of manufactured product 4,207,000 4,074,388 9,966,837 8,483,959
Royalty expense to shareholders 633,348 549,271 1,330,636 1,154,513
Total cost of sales 4,840,348 4,623,659 11,297,473 9,638,472
Gross profit 3,135,623 2,825,074 6,426,130 6,275,878
Operating expenses:        
Sales and marketing 790,891 955,961 1,549,268 1,805,977
Research and development 179,602 204,004 369,882 386,212
General and administrative 3,153,072 4,694,151 5,594,827 9,133,391
Impairment of assets       163,039
Total operating expenses 4,123,565 5,854,116 7,513,977 11,488,619
Loss from operations (987,942) (3,029,042) (1,087,847) (5,212,741)
Interest and other income 17,621 2,517 33,598 8,197
Interest expense, net (65,523) (75,685) (122,456) (166,537)
Litigation settlements, net 1,900,000   3,800,000  
Income (loss) before income taxes 864,156 (3,102,210) 2,623,295 (5,371,081)
Provision (benefit) for income taxes 17,284 (337,132) 52,466 (334,507)
Net income (loss) 846,872 (2,765,078) 2,570,829 (5,036,574)
Preferred stock dividend requirements (342,217) (342,717) (684,434) (685,434)
Earnings (loss) applicable to common shareholders $ 504,655 $ (3,107,795) $ 1,886,395 $ (5,722,008)
Basic earnings (loss) per share (in dollars per share) $ 0.02 $ (0.13) $ 0.08 $ (0.24)
Diluted earnings (loss) per share (in dollars per share) $ 0.02 $ (0.13) $ 0.07 $ (0.24)
Weighted average common shares outstanding:        
Basic (in shares) 24,004,118 23,825,149 23,995,116 23,825,149
Diluted (in shares) 26,189,076 23,825,149 26,573,513 23,825,149