Calculation of Weighted Average Number of Dilutive Shares of Common Stock (Detail) - shares	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Summary Of Significant Accounting Policies [Line Items]
Common Stock to be issued upon conversion of convertible preferred stock	13,472,524	11,824,731
Series A Preferred stock
Summary Of Significant Accounting Policies [Line Items]
Common Stock to be issued upon conversion of convertible preferred stock	506,666	506,666
Series C Preferred Stock
Summary Of Significant Accounting Policies [Line Items]
Common Stock to be issued upon conversion of convertible preferred stock	2,350,040	2,358,370
Outstanding options
Summary Of Significant Accounting Policies [Line Items]
Common Stock to be issued upon conversion of convertible preferred stock	1,917,238	1,626,919
Outstanding warrants
Summary Of Significant Accounting Policies [Line Items]
Common Stock to be issued upon conversion of convertible preferred stock	8,698,580	7,332,776