| Marketable Securities [Table Text Block] |
Marketable securities consisted of the following as of March 31, 2023:
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March 31, 2023 |
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Amortized Cost |
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Unrealized Gain |
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Unrealized Loss |
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Fair Value |
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Marketable securities, available-for-sale: |
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U.S. Treasury obligations |
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$ |
21,595,742 |
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$ |
165,822 |
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$ |
— |
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$ |
21,761,564 |
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Total |
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$ |
21,595,742 |
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$ |
165,822 |
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$ |
— |
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$ |
21,761,564 |
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December 31, 2022 |
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Amortized Cost |
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Unrealized Gain |
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Unrealized Loss |
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Fair Value |
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Marketable securities, available-for-sale: |
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U.S. Treasury obligations |
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$ |
15,756,902 |
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$ |
104,718 |
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$ |
— |
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$ |
15,861,620 |
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Total |
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$ |
15,756,902 |
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$ |
104,718 |
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$ |
— |
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$ |
15,861,620 |
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