Net Loss per Share (Details 1) - shares	Mar. 31, 2021	Mar. 31, 2020
Outstanding stock options and common stock warrants	123,213,937	196,425,139
Outstanding stock options and common stock warrants exercisable	67,496,008	120,636,050
Common Stock Issuable
Outstanding stock options and common stock warrants	494,697	494,697
Convertible notes [Member]
Outstanding stock options and common stock warrants	51,717,929	117,025,451
Convertible preferred stock [Member]
Outstanding stock options and common stock warrants	2,877,270	2,877,270
Common stock warrants [Member]
Outstanding stock options and common stock warrants	64,124,041	72,027,721
Employee Stock Option [Member]
Outstanding stock options and common stock warrants	4,000,000	4,000,000