Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The following table summarizes the unaudited quarterly financial data for the last two fiscal years.

	2012
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Licensing revenue	$	758,754		$	758,755		$	523,191		$	405,405		$	2,446,105
Costs and expenses:
Research and development		3,059,585			5,018,029			3,318,310			4,786,640			16,182,564
General and administrative		1,059,202			943,857			991,062			2,183,008			5,177,129
Total costs and expenses		4,118,787			5,961,886			4,309,372			6,969,648			21,359,693
Other income (expense):
Revaluation of warrants		677,907			301,568			(1,417,690	)		(24,187,383	)		(24,625,598	)
Foreign currency loss on liquidation		—			(191,733	)		—			—			(191,733	)
Other income, net		2,434			7,308			16,883			61,223			87,848
		680,341			117,143			(1,400,807	)		(24,126,160	)		(24,729,483	)
Net loss		(2,679,692	)		(5,085,988	)		(5,186,988	)		(30,690,403	)	$	(43,643,071	)
Dividends on preferred stock, not declared		(750,000	)		(750,000	)		(1,000,000	)		(130,435	)
Net loss attibutable to common stockholders	$	(3,429,692	)	$	(5,835,988	)	$	(6,186,988	)	$	(30,820,838	)
Net loss per common share-basic and diluted	$	(1.03	)	$	(1.75	)	$	(1.86	)	$	(2.02	)
Weighted average shares outstanding, basic and diluted		3,329,266			3,329,266			3,329,266			15,223,010

	2011
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Licensing revenue	$	—		$	405,405		$	640,972		$	758,753		$	1,805,130
Costs and expenses:
Research and development		2,229,545			2,521,268			2,512,248			4,163,094			11,426,155
General and administrative		1,125,748			894,248			1,154,090			1,035,343			4,209,429
Total costs and expenses		3,355,293			3,415,516			3,666,338			5,198,437			15,635,584
Other income (expense):
Revaluation of warrants		21,718			72,487			174,338			776,283			1,044,826
Other income, net		665			19,618			10,098			17,593			47,974
		22,383			92,105			184,436			793,876			1,092,800
Net loss		(3,332,910	)		(2,918,006	)		(2,840,930	)		(3,645,808	)	$	(12,737,654	)
Dividends on preferred stock, not declared		(750,000	)		(750,000	)		(750,000	)		(750,000	)
Net loss attibutable to common stockholders	$	(4,082,910	)	$	(3,668,006	)	$	(3,590,930	)	$	(4,395,808	)
Net loss per common share-basic and diluted	$	(1.23	)	$	(1.10	)	$	(1.08	)	$	(1.32	)
Weighted average shares outstanding, basic and diluted		3,329,266			3,329,266			3,329,266			3,329,266