Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

v3.20.1
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Jan. 31, 2020
Apr. 30, 2019
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 50,000,000 50,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 24,439,478 19,860,625
Common stock, shares outstanding 24,439,478 19,860,625
Convertible Series F Preferred Stock [Member]    
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 1,250 1,250
Preferred stock, shares issued 270
Preferred stock, shares outstanding 270
Preferred stock, liquidation preference $ 540,000 $ 540,000