Condensed Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Condensed Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 180,503	$ 182,880
Allowance for doubtful accounts non current	332,052	372,000
Accumulated depreciation on furniture, fixtures and equipment	450,155	446,484
Accumulated amortization of patents	363,159	344,238
Discount on notes payable	$ 1,532	$ 3,065
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	15,693,678	15,556,878
Common stock, shares to be issued	1,568,124	1,501,457
Common stock, shares outstanding	15,660,345	15,523,545
Treasury stock, at cost	33,333	33,333