Net Loss per Share (Details 1) - shares	Jun. 30, 2020	Jun. 30, 2019
Outstanding stock options and common stock warrants	173,769,522	110,897,261
Outstanding stock options and common stock warrants exercisable	169,274,825	112,402,564
Convertible preferred stock [Member]
Outstanding stock options and common stock warrants	2,877,270	2,877,270
Convertible notes [Member]
Outstanding stock options and common stock warrants	98,025,667	31,285,755
Stock Option [Member]
Outstanding stock options and common stock warrants	4,000,000	4,000,000
Common stock warrants [Member]
Outstanding stock options and common stock warrants	68,371,888	72,239,539
Common Stock Issuable [Member]
Outstanding stock options and common stock warrants	494,697	494,697