Fair Value of Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value of Assets and Liabilities [Abstract]

Assets and liabilities measured at fair value on a recurring basis

	December 31, 2012
	Level 1		Level 2		Level 3		Fair Value
Liabilities:
Derivative warrant liability	$	—	$	14,584,818	$	—	$	14,584,818
	December 31, 2011
	Level 1		Level 2		Level 3		Fair Value
Liabilities:
Derivative warrant liability	$	—	$	35,473,230	$	—	$	35,473,230