Stockholders' Equity - Common and Preferred Shares (Details Textual) (USD $)	1 Months Ended		7 Months Ended	9 Months Ended					1 Months Ended	9 Months Ended		1 Months Ended	9 Months Ended
	Jul. 31, 2012	Jan. 31, 2012	Jul. 31, 2012	Sep. 30, 2012	Sep. 30, 2011	Oct. 31, 2012	Dec. 31, 2011	Sep. 30, 2012 2005 Plan [Member]	Oct. 31, 2012 Lincoln Park Capital Fund, LLC [Member]	Sep. 30, 2012 Lincoln Park Capital Fund, LLC [Member]	Nov. 30, 2011 Lincoln Park Capital Fund, LLC [Member]	Oct. 31, 2012 MLV & Co. LLC [Member]	Sep. 30, 2012 MLV & Co. LLC [Member]
Stockholders' Equity - Common and Preferred Shares (Textual) [Abstract]
Value of purchase agreement for the sale with Lincoln Park Capital Fund, LLC											$ 20,000,000
Common stock, new shares issued									795,056	2,730,525		25,370	1,824,288
Proceeds from issuance of common stock, net of issuance costs				3,269,000	17,019,000				400,000	2,123,000		14,000	1,146,000
Shares issued as a commitment fee									11,988	65,934
Maximum number of shares acquired for the award of options, restricted stock and stock appreciation								4,000,000
Maximum number of shares granted to any one participant in any fiscal year								200,000
Minimum Purchase Price Per Share										$ 0.50
Additional value of purchase agreement for the sale with Lincoln Park Capital Fund, LLC										17,400,000
Common stock, additional shares issued in connection with Lincoln Park Capital Fund, LLC										802,341
Stockholders' Equity - Common and Preferred Shares (Additional Textual) [Abstract]
Common stock, shares authorized				100,000,000			300,000,000
Common stock, shares issued				19,764,000			15,177,000
Common stock, shares outstanding				19,764,000			15,177,000
Share issue for compensation, Shares	18,148	10,101
Share issue for compensation, Value			20,000
The value of warrants recorded on the Company's balance sheet				1,000			6,000
Unrecognized compensation cost related to stock option awards				315,000
Weighted average period for recognizing unrecognized compensation cost as expense				2 years 3 months 18 days
Total dollar amount of common stock company could sell under the ATM						$ 1,672,000