STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (USD $)	Convertible Preferred Series A	Convertible Preferred Series B	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning Balance, amount at Dec. 31, 2010	$ 530,000	$ 1,094,000	$ 144,110,000	$ 9,040,000	$ (144,128,000)	$ 10,646,000
Beginning Balance, shares at Dec. 31, 2010	2,652,000	546,000	31,479,000
Issuance of common stock upon exercise of stock options, shares			36,000
Issuance of common stock upon exercise of stock options, amount			23,000			23,000
Issuance of common stock, shares			11,250,000
Issuance of common stock, amount			1,245,000			1,245,000
Stock option expense				368,000		368,000
Issuance of common stock upon conversion of preferred stock, shares	(10,000)
Issuance of common stock upon conversion of preferred stock, amount	(200,000)		2,000
Net loss					(6,984,000)	(6,984,000)
Ending Balance, amount at Dec. 31, 2011	528,000	1,094,000	145,380,000	9,408,000	(151,112,000)	5,298,000
Ending Balance, shares at Dec. 31, 2011	2,642,000	546,000	42,765,000
Issuance of common stock upon exercise of stock options, amount
Stock option expense				171,000		171,000
Issuance of common stock for cash, shares			1,755,000
Issuance of common stock for cash, amount			132,000			132,000
Net loss					(8,235,000)	(8,235,000)
Ending Balance, amount at Dec. 31, 2012	$ 528,000	$ 1,094,000	$ 145,512,000	$ 9,479,000	$ (159,347,000)	$ (2,634,000)
Ending Balance, shares at Dec. 31, 2012	2,642,000	546,000	44,520,000