Investments - Schedule of held-to-maturity securities (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Net Investment Income [Line Items]
Cost or Amortized Cost	$ 7,046,023	$ 7,047,342
Gross Unrealized Gains	381	0
Gross unrealized losses - less than 12 months	(17,142)	(40,284)
Gross unrealized loss - more than 12 months	(1,052,775)	(1,047,793)
Estimated Fair Value	5,976,487	5,959,265
Net Unrealized Gains/ (Losses)	(1,069,536)	(1,088,077)
U.S. Treasury securities
Net Investment Income [Line Items]
Cost or Amortized Cost	1,229,249	1,229,170
Gross Unrealized Gains	381	0
Gross unrealized losses - less than 12 months	(17,103)	(39,630)
Gross unrealized loss - more than 12 months	(10,865)	(15,990)
Estimated Fair Value	1,201,662	1,173,550
Net Unrealized Gains/ (Losses)	(27,587)	(55,620)
Political subdivisions of States, Territories and Possessions
Net Investment Income [Line Items]
Cost or Amortized Cost	499,859	499,719
Gross Unrealized Gains	0	0
Gross unrealized losses - less than 12 months	(39)	(654)
Gross unrealized loss - more than 12 months	0	0
Estimated Fair Value	499,820	499,065
Net Unrealized Gains/ (Losses)	(39)	(654)
Exchange traded debt
Net Investment Income [Line Items]
Cost or Amortized Cost	304,111	304,111
Gross Unrealized Gains	0	0
Gross unrealized losses - less than 12 months	0	0
Gross unrealized loss - more than 12 months	(60,111)	(55,611)
Estimated Fair Value	244,000	248,500
Net Unrealized Gains/ (Losses)	(60,111)	(55,611)
Corporate and other bonds industrial and miscellaneous
Net Investment Income [Line Items]
Cost or Amortized Cost	5,012,804	5,014,342
Gross Unrealized Gains	0	0
Gross unrealized losses - less than 12 months	0	0
Gross unrealized loss - more than 12 months	(981,799)	(976,192)
Estimated Fair Value	4,031,005	4,038,150
Net Unrealized Gains/ (Losses)	$ (981,799)	$ (976,192)