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Investments (Summary of Held-to-Maturity Debt Securities by Contractual Maturity) (Details)
Jun. 30, 2023
USD ($)
Amortized cost basis  
Due within one year $ 17,064,274
Amortized cost basis 17,064,274
Fair Value  
Due within one year 16,970,534
Fair Value $ 16,970,534