CONDENSED STATEMENTS OF STOCKHOLDERS' DEFICIT (USD $)	Total	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2010	$ (6,658,096)	$ 5,000	$ 36,594	$ 90,851,709	$ (97,551,399)
Beginning Balance (in shares) at Dec. 31, 2010		5,000,000	36,594,799
Net loss	(2,467,978)				(2,467,978)
Common stock issued:
Employee stock purchase plan (in shares)	64,134		64,134
Employee stock purchase plan	16,965		65	16,900
Stock-based compensation expense	130,966			130,966
Ending Balance at Jun. 30, 2011	(8,978,143)	5,000	36,659	90,999,575	(100,019,377)
Ending Balance (in shares) at Jun. 30, 2011		5,000,000	36,658,933
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	(2,644,540)				(2,644,540)
Private placement of preferred stock, net of offering costs of $354,907 (in shares)		500,000
Private placement of preferred stock, net of offering costs of $354,907	2,645,093	500		2,644,593
Warrants issued in connection with private placement of preferred stock	104,907			104,907
Common stock issued:
Employee stock purchase plan (in shares)	52,158		52,158
Employee stock purchase plan	8,810		52	8,758
Stock-based compensation expense	96,131			96,131
Ending Balance at Jun. 30, 2012	$ (11,212,830)	$ 5,500	$ 36,762	$ 93,966,029	$ (105,221,121)
Ending Balance (in shares) at Jun. 30, 2012		5,500,000	36,761,864