Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) (USD $)	12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011 Series C Convertible Preferred Stock [Member]	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2013 Additional Paid-In Capital [Member]
Issuance costs of series C convertible preferred stock		$ 698,700
Issuance costs of common stock	$ 2,400,000		$ 2,400,000	$ 2,400,000