Loss per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net loss	$ (7,618,626)	$ (3,917,493)	$ (16,941,010)	$ (11,792,369)
Net loss attributable to common stockholders	$ (7,618,626)	$ (3,917,493)	$ (16,941,010)	$ (11,792,369)
Denominator:
Weighted average common shares outstanding (in shares)	63,301,676	27,297,311	53,688,464	25,403,001
Net loss per share of common stock-basic and diluted (in dollars per share)	$ (0.12)	$ (0.14)	$ (0.32)	$ (0.46)
Securities excluded from the computation of diluted weighted shares outstanding
Anti-dilutive securities (in shares)			11,899,988	34,168,241
Series A convertible preferred stock
Securities excluded from the computation of diluted weighted shares outstanding
Anti-dilutive securities (in shares)			104,013	26,041,667
Series B convertible preferred stock
Securities excluded from the computation of diluted weighted shares outstanding
Anti-dilutive securities (in shares)				1,071,429
Stock options
Securities excluded from the computation of diluted weighted shares outstanding
Anti-dilutive securities (in shares)			6,381,186	4,055,145
Warrants
Securities excluded from the computation of diluted weighted shares outstanding
Anti-dilutive securities (in shares)			5,414,789	3,000,000