XML 32 R3.htm IDEA: XBRL DOCUMENT v3.21.4
Consolidated Balance Sheets (Parenthetical) - $ / shares
Oct. 31, 2021
Apr. 30, 2021
Apr. 30, 2020
Feb. 25, 2020
Feb. 24, 2020
Statement of Financial Position [Abstract]          
Common Stock, Par or Stated Value Per Share $ 0.001 $ 0.001 $ 0.001    
Common Stock, Shares Authorized 300,000,000 300,000,000 300,000,000 300,000,000 75,000,000
Common stock, shares outstanding 41,869,622 27,642,828 24,749,354    
Common stock, shares issued 41,869,622 27,642,828 24,749,354    
Shares issuable 0 6,921,299 8,137,859