Net Loss Attributable to Common Stockholders - Schedule of Antidilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities	2,052,326	1,281,856	8,867,176
Convertible Preferred Series C
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities			7,713,455
Service Period Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities	1,991,209	1,220,739	1,092,604
Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities	61,117	61,117	61,117