Investments (Summary of Unrealized Positions for Held-to-Maturity Debt Securities) (Details) - USD ($)	Sep. 30, 2023	Jun. 30, 2023
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost basis	$ 17,183,653	$ 17,064,274
Gross unrealized losses	(65,219)	(93,740)
Fair Value	17,118,434	16,970,534
US Treasury Securities [Member]
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost basis	17,183,653	17,064,274
Gross unrealized losses	(65,219)	(93,740)
Fair Value	$ 17,118,434	$ 16,970,534