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Loans payable (Details) - USD ($)
1 Months Ended 9 Months Ended
Apr. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Jul. 28, 2015
Loans payable (Details) [Line Items]        
Debt instrument       $ 1,750,000
Debt instrument, maturity date, description The PPP Note carried a maturity date of April 2022      
PaycheckProtectionProgramTermNoteMember        
Loans payable (Details) [Line Items]        
Debt instrument $ 42,100      
Debt instrument interest rate 1.00%      
Percentage of non-payroll costs   25.00%    
Loan balance   $ 0 $ 42,100