Stockholders' Deficit (Details Textual) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Jan. 24, 2011 Common Stock [Member]
Class of Warrant or Right [Line Items]
Common stock, authorized	37,500,000	37,500,000
Common stock, outstanding	26,477,258	26,288,998
Warrants, outstanding	3,582,402
Exercise price of warrants (in dollars per share)			$ 48.81