Summary of Significant Accounting Policies (Details 4) (USD $)	3 Months Ended		52 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013
Numerator
Net loss	$ (6,253,233)	$ (9,174,109)	$ (65,873,235)
Less dividends on preferred stock, not declared	(1,094,324)	(909,394)	(8,509,524)
Net loss attributable to common stockholders	$ (7,347,557)	$ (10,083,503)	$ (79,382,750)
Denominator
Common shares outstanding	3,010,101	3,010,101
Less weighted average unvested common shares	626,657	1,378,374
Weighted average shares used to compute net loss per share	2,383,444	1,631,727
Net loss per share, basic and diluted (in dollars per share)	$ (3.08)	$ (6.18)