CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (USD $)	Total	Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
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)	0	0	0	(1,201,580)
Common stock issued:
Exercise of employee stock options (in shares)	2,000	0	2,000
Exercise of employee stock options	520	0	2	518	0
Employee stock purchase plan (in shares)		0	18,344
Employee stock purchase plan	4,769	0	18	4,751	0
Stock-based compensation expense	30,689	0	0	30,689	0
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
Beginning Balance at Dec. 31, 2013	5,253,222	0	122,449	119,885,371	(114,754,598)
Beginning Balance (in shares) at Dec. 31, 2013		0	122,448,707
Net loss	(1,664,519)	0	0	0	(1,664,519)
Common stock issued:
Exercise of employee stock options (in shares)	0
Employee stock purchase plan (in shares)		0	32,967
Employee stock purchase plan	9,890	0	33	9,857	0
Stock-based compensation expense	122,220	0	0	122,220	0
Ending Balance at Mar. 31, 2014	$ 3,720,813	$ 0	$ 122,482	$ 120,017,448	$ (116,419,117)
Ending Balance (in shares) at Mar. 31, 2014		0	122,481,674