Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
E
Preferred stock (in dollars per share)	$ 6.0199	$ 6.02
Preferred stock issuance costs		$ 405,371
F
Preferred stock (in dollars per share)	$ 12.7629
Preferred stock issuance costs	$ 86,933