Nature of the Business and Operations (Details Textual) (USD $)	0 Months Ended	3 Months Ended												12 Months Ended
	Apr. 04, 2013	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nature of the Business and Operations [Abstract]
Net loss		$ (3,107,000)	$ (3,245,000)	$ (3,874,000)	$ (4,008,000)	$ (3,047,000)	$ (3,343,000)	$ (3,120,000)	$ (3,570,000)	$ (2,128,000)	$ (2,144,000)	$ (3,427,000)	$ (1,588,000)	$ (14,234,000)	$ (13,080,000)	$ (9,287,000)
Accumulated deficit		(165,929,000)				(151,695,000)								(165,929,000)	(151,695,000)
Net cash used in operating activities														(11,824,000)	(8,801,000)	(3,744,000)
Proceeds from issuance of warrants	40,000													12,725,000		168,668
Warrants issued to purchase shares of common stock														2,500,000		361,000
Exercise price	$ 1.00	$ 5.09								$ 1.38				$ 5.09		$ 1.38
Placement agent fee														$ 600,000
Warrants issued to placement agent														75,000
Number of stock issued				5,000,000