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Marketable securities (Details 1) - USD ($) | Mar. 31, 2024 | Dec. 31, 2023
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Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | $ 982,604 | $ 4,462,942
Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 982,604 | 4,462,942
Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 0 | 0
Corporate Debt Securities [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 982,604 | 4,462,942
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 0 | 0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | 982,604 | 4,462,942
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Total marketable securities | $ 0 | $ 0

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