Retirement Benefit Plans (Details 7) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Total contributions for the period	$ 1,061,605	$ 1,085,088
Regular Matching Contributions [Member]
Total contributions for the period	561,357	553,619
Transitional Credit Contributions [Member]
Total contributions for the period	123,387	138,604
Non-Discretionary Contributions [Member]
Total contributions for the period	$ 376,861	$ 392,865