v3.22.2.2
Summary of significant accounting policies (Details) - USD ($)
12 Months Ended
Sep. 14, 2022
Jun. 30, 2022
Jun. 30, 2021
Summary of significant accounting policies (Details) [Line Items]      
Accumulated deficit   $ 147,400,000  
Net loss   $ 77,200,000  
Working capital $ 5,600,000    
Unlimited useful life   5 years  
Impairment charges amount     $ 99,943
Percentage of tax realized upon ultimate settlement   50.00%  
Minimum [Member]      
Summary of significant accounting policies (Details) [Line Items]      
Residual value, percentage   0.00%  
Maximum [Member]      
Summary of significant accounting policies (Details) [Line Items]      
Residual value, percentage   5.00%