Investments, Summary (Details) - USD ($)		6 Months Ended		12 Months Ended
	Nov. 30, 2013	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Investments [Abstract]
Net unrealized losses arising prior to reclassification date	$ (15,100,000)
Amortization of other comprehensive loss		$ (134,775)	$ (298,291)
Accumulated other comprehensive loss		$ (45,201,442)		$ (41,703,747)
Minimum [Member]
Investments [Abstract]
Percentage of which the company held security of any issuer		10.00%		10.00%
Obligations of States and Political Subdivisions [Member]
Investments [Abstract]
Aggregate fair value of bond held		$ 243,400,000		$ 240,700,000
Amortized cost of bond held		281,700,000		283,500,000
Special Revenue Bonds [Member]
Investments [Abstract]
Aggregate fair value of bond held		123,500,000		122,900,000
Amortized cost of bond held		$ 141,900,000		$ 144,000,000
Education Bonds [Member]
Investments [Abstract]
Percentage of investments in special revenue bonds		48.00%		48.00%
Water and Sewer Utility Bonds [Member]
Investments [Abstract]
Percentage of investments in special revenue bonds		36.00%		35.00%
Accumulated Net Unrealized Investment Losses [Member]
Investments [Abstract]
Accumulated other comprehensive loss		$ (4,500,000)		$ (4,700,000)