Retirement Benefit Plans (Details 3) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Pension Benefit [Member]
Net (loss)/gain	$ (36,956,587)	$ (40,447,026)
Prior service (cost) credit	0	(66,252)
Total	(36,956,587)	(40,513,278)
Change due to availability of final actual assets and census data	0	0
Balance at beginning of period	(40,513,278)	(43,893,239)
Prior service cost	66,252	99,380
Net loss (gain)	1,560,299	1,730,150
Discount rate, amount	26,408,548	5,316,621
Asset (gains)/losses deferred	(22,866,209)	(771,444)
Plan amendments	0	0
Significant Event	0	0
Other	(1,612,199)	(2,994,746)
Balance at end of period	(36,956,587)	(40,513,278)
Other Postretirement Benefit [Member]
Net (loss)/gain	900,694	241,621
Prior service (cost) credit	0	0
Total	900,694	241,621
Change due to availability of final actual assets and census data	0	0
Balance at beginning of period	241,621	349,276
Prior service cost	4,241	0
Net loss (gain)	(8,214)	(12,374)
Discount rate, amount	562,340	96,343
Asset (gains)/losses deferred	27,311	(9,615)
Plan amendments	0	(36,388)
Significant Event	0	(35,159)
Other	73,395	(110,462)
Balance at end of period	$ 900,694	$ 241,621