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Retirement Benefit Plans (Details 2) - USD ($)
12 Months Ended 24 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Jan. 01, 2022
Pension Benefit [Member]        
Change in discount rate   $ (5,316,621) $ (26,408,548)  
Service cost $ 1,078,973 1,087,333 1,078,973  
Interest cost 2,432,756 2,017,015 2,432,756  
Plan amendment   0 0  
Actuarial (gain)/loss   2,340,743 934,211  
Significant Event   0 0  
Benefits paid   (4,257,857) (4,756,015)  
Net amount recognized in the balance sheet (22,174,465) (26,605,382) (22,174,465)  
Benefit obligation at beginning of year   111,549,725 107,420,338  
Benefit obligation at end of year   107,420,338 80,701,715  
Fair value of plan assets at beginning of year 58,527,250   58,527,250 $ 80,814,956
Fair value of plan assets at end of year 58,527,250   58,527,250  
Other Postretirement Benefit [Member]        
Benefit obligation at beginning of year   1,827,169 1,724,582  
Change in discount rate   (96,343) (562,340)  
Service cost 53,291 54,505 53,291  
Interest cost 43,950 39,369 43,950  
Plan amendment   36,388 0  
Actuarial (gain)/loss   110,462 (73,395)  
Significant Event   (218,103) 0  
Benefits paid   (28,865) (34,962)  
Benefit obligation at end of year 1,151,126 1,724,582 1,151,126  
Net amount recognized in the balance sheet (666,222) (1,284,589) (666,222)  
Pension Plans Defined Benefit [Member]        
Significant Event   0 0  
Benefits paid   (4,257,855) (4,756,015)  
Actual return on plan assets   4,369,247 (17,701,556)  
Fair value of plan assets at beginning of year 80,814,956 78,361,102 80,814,956  
Employer contributions   2,342,462 169,865  
Fair value of plan assets at end of year 80,814,956 78,361,102 80,814,956  
Other Postretirement Benefit Plans Defined Benefit [Member]        
Significant Event   (218,103) 0  
Benefits paid   (45,243) (49,158)  
Actual return on plan assets   16,066 44,911  
Fair value of plan assets at beginning of year 439,993 642,030 439,993  
Employer contributions   45,243 49,158  
Fair value of plan assets at end of year $ 439,993 $ 642,030 $ 439,993