Investments, Summary (Details) - USD ($)		3 Months Ended		12 Months Ended
	Nov. 30, 2013	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Investments [Abstract]
Net unrealized losses arising prior to reclassification date	$ (15,100,000)
Amortization of other comprehensive loss		$ 48,577	$ 77,032
Accumulated other comprehensive loss		$ (34,483,112)		$ (32,881,822)
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		$ 241,500,000		$ 245,100,000
Amortized cost of bond held		277,900,000		278,300,000
Special Revenue Bonds [Member]
Investments [Abstract]
Aggregate fair value of bond held		123,500,000		124,800,000
Amortized cost of bond held		$ 140,800,000		$ 140,800,000
Education Bonds [Member]
Investments [Abstract]
Percentage of investments in special revenue bonds		47.00%		47.00%
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		$ (1,200,000)		$ (1,300,000)