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 |