Stockholders' Equity - Common and Preferred Shares (Details Textual) (USD $)	1 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended
	Jul. 31, 2012	Jan. 31, 2012	Jun. 30, 2012	Aug. 03, 2012	Dec. 31, 2011	Jun. 30, 2012 2005 Plan [Member]	Jul. 31, 2012 Lincoln Park Capital Fund, LLC [Member]	Jun. 30, 2012 Lincoln Park Capital Fund, LLC [Member]	Nov. 30, 2011 Lincoln Park Capital Fund, 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, shares issued in connection with Lincoln Park Capital Fund, LLC								2,360,674
Net of Issuance costs								1,699,000
Shares issued as a commitment fee								59,940
Proceeds for share issue during the period							1,899,000	200,000
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
Stockholders' Equity - Common and Preferred Shares (Additional Textual) [Abstract]
Common stock, shares authorized			100,000,000		300,000,000
Common stock, shares issued			17,548,000		15,177,000
Common stock, shares outstanding			17,548,000		15,177,000
Share issue for compensation, Shares	18,148	10,101
Share issue for compensation, Value	10,000	10,000
The value of warrants recorded on the Company's balance sheet			1,000		6,000
Unrecognized compensation cost related to stock option awards			332,000
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				$ 4,000,000