Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Private Placement of Common Stock and Warrants through Placement Agent (Details)

v3.22.2.2
Subsequent Events - Private Placement of Common Stock and Warrants through Placement Agent (Details)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
$ / shares
shares
May 31, 2022
shares
May 31, 2021
shares
Subsequent Event [Line Items]      
Stock issued via offering, tender or placement, shares   7,900,000  
Private Equity Offering      
Subsequent Event [Line Items]      
Stock issued via offering, tender or placement, shares     8,900,000
Term of warrants     5 years
Subsequent Event | Private Equity Offering      
Subsequent Event [Line Items]      
Stock issued via offering, tender or placement, shares 50,700,000    
Gross proceeds | $ $ 12.9    
Proceeds from private equity offering | $ $ 11.3    
Common stock per unit 1    
Number of shares per warrant 0.75    
Class of warrants, exercise price | $ / shares $ 0.30    
Combination Stock Warrant | $ / shares $ 0.255    
Warrant issued 38,100,000    
Warrant exercise price percentage of final unit price 120.00%    
Term of warrants 5 years