Retirement Benefit Plans (Details) - USD ($)	12 Months Ended		24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022
Pension Benefit [Member]
Service cost	$ 1,078,973	$ 1,087,333	$ 1,078,973
Interest cost	2,432,756	2,017,015	2,432,756
Expected return on plan assets	(5,842,641)	(5,794,694)
Amortization of prior service cost	66,252	99,380
Amortization of the net loss	1,560,299	1,730,150
Net periodic benefit cost	(704,361)	(860,816)
Other Postretirement Benefit [Member]
Service cost	53,291	54,505	53,291
Interest cost	43,950	39,369	$ 43,950
Expected return on plan assets	(17,600)	(25,681)
Amortization of prior service cost	0	0
Amortization of the net loss	(8,214)	(12,374)
Net periodic benefit cost	$ 75,668	$ 55,819