Basic and Diluted Net Loss Per Common Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Common shares not included in calculating diluted net loss per share	16,224,748	18,448,341
Stock Options [Member]
Common shares not included in calculating diluted net loss per share	14,171,442	15,523,008
Unvested Restricted Shares [Member]
Common shares not included in calculating diluted net loss per share	1,997,750	1,092,000
5% Convertible Notes [Member]
Common shares not included in calculating diluted net loss per share	55,556	1,833,333