Annual report pursuant to Section 13 and 15(d)

Schedule of fair value marketable securities (Details)

v3.23.1
Schedule of fair value marketable securities (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities $ 2,927,518 $ 6,064,097
Fair Value, Inputs, Level 2 [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities 2,927,518 6,064,097
Corporate Debt Securities [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities 2,436,333 5,549,670
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities 2,436,333 5,549,670
Certificates of Deposit [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities 491,185 514,427
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Marketable securities $ 491,185 $ 514,427