Series B Preferred Stock Conversion (Details Textual) (USD $)	1 Months Ended		6 Months Ended	12 Months Ended
	Nov. 30, 2011	Jan. 31, 2011	Jun. 30, 2012	Dec. 31, 2008 Fund
Series B Preferred Stock Conversion (Textual) [Abstract]
Number of funds				2
Series B Preferred Stock Sold to Purchaser				35,000
Number of common stock aggregate on conversion of Series B Preferred Stock				3,500,000
Number of shares to be taken up from Warrants				700,000
Exercise price of Warrants				$ 10.00
Net proceeds from Warrant (Series B Stock)				$ 35,000,000
Net proceeds after the placement (Series B Stock)				$ 33,500,000
Expiration period of warrants				Tenth anniversary of the date they were first issued
Conversion price of convertible stock to common share				$ 10.00
Minimum market price of common stock				$ 17.50
No of consecutive trading days				65 days
Preferred Stock, Conversion date			Jan. 24, 2011
All shares of the Series B Preferred Stock converted into common Stock		3,499,999
Common stock issued upon exercise of warrants on net exercise basis	455,465