Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (13,331,533)	$ (51,712,936)	$ (17,665,563)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	33,051	43,052	117,590
Non-cash interest expense	298,790	327,479	87,087
Stock-based compensation	1,757,259	1,843,365	1,167,279
Changes in operating assets and liabilities:
Accounts receivable	(15,116,822)	0	0
Prepaid expenses and other assets	308,917	503,785	(1,667,139)
Accounts payable	837,477	(392,594)	845,204
Accrued expenses	2,728,985	1,676,209	4,666,196
Deferred revenue	35,050,572	0	(1,000,000)
Other non-current liabilities	314,831	347,826	91,304
Net cash provided by (used in) operating activities	12,881,527	(47,363,814)	(13,358,042)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sale/maturity of investments	1,124,999	0	0
Purchases of investments	0	(1,387,022)	0
Purchases of property and equipment	(133,403)	(17,695)	0
Net cash provided by (used in) investing activities	991,596	(1,404,717)	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on capital lease obligations	(27,424)	(25,872)	(12,380)
Payment of withholding taxes related to restricted stock units	(2,708)	(190,360)	(115,808)
Payment on debt obligations	(5,666,666)	0	0
Proceeds from exercise of common stock warrants	164,358	0	254,148
Proceeds from the sale of common stock and warrants, net of costs	23,856,973	19,834,278	18,556,111
Proceeds from the issuance of notes payable and warrants	0	10,000,000	10,000,000
Payment of debt issuance costs	0	(146,115)	(209,366)
Net cash provided by financing activities	18,324,533	29,471,931	28,472,705
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	32,197,656	(19,296,600)	15,114,663
CASH AND CASH EQUIVALENTS, beginning of period	8,002,668	27,299,268	12,184,605
CASH AND CASH EQUIVALENTS, end of period	40,200,324	8,002,668	27,299,268
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	1,676,954	1,836,743	483,306
Equipment acquired under capital lease	0	0	80,000
Issuance of warrants in connection with debt financing	$ 0	$ 305,196	$ 267,820