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Retirement Benefit Plans (Details 3) - USD ($) | 12 Months Ended
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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

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