REGISTERED DIRECT SALE OF COMMON STOCK (Details Textual) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jan. 05, 2012
Stock Authorized Under Shelf Registration Statement	$ 100,000,000		$ 63,950,000
Proceeds from Issuance of Common Stock	23,700,000	40,300,000
Stock Issued During Period Shares New Issues	4,989,275	10,062,500
Payments of Stock Issuance Costs	1,500,000	2,500,000
Stock Issued During Period Value New Issues	$ 22,151,851	$ 37,700,000