CONDENSED STATEMENTS OF STOCKHOLDERS' DEFICIT (USD $)	Total	Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2011	$ (11,423,231)	$ 5,000	$ 36,710	$ 91,111,640	$ (102,576,581)
Beginning Balance (in shares) at Dec. 31, 2011		5,000,000	36,709,706
Net loss	(1,414,706)				(1,414,706)
Common stock issued:
Employee stock purchase plan (in shares)			46,530
Employee stock purchase plan	7,910		46	7,864
Stock-based compensation expense	35,103			35,103
Ending Balance at Mar. 31, 2012	(12,794,924)	5,000	36,756	91,154,607	(103,991,287)
Ending Balance (in shares) at Mar. 31, 2012		5,000,000	36,756,236
Beginning Balance at Dec. 31, 2012	(13,623,800)	5,500	36,762	94,030,603	(107,696,665)
Beginning Balance (in shares) at Dec. 31, 2012		5,500,000	36,761,864
Net loss	(1,201,580)				(1,201,580)
Common stock issued:
Exercise of employee stock options (in share)			2,000
Exercise of employee stock options	520		2	518
Employee stock purchase plan (in shares)			18,344
Employee stock purchase plan	4,769		18	4,751
Stock-based compensation expense	30,689			30,689
Ending Balance at Mar. 31, 2013	$ (14,789,402)	$ 5,500	$ 36,782	$ 94,066,561	$ (108,898,245)
Ending Balance (in shares) at Mar. 31, 2013		5,500,000	36,782,208