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Schedule of Investments (Details) (Parenthethical) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Short term investment $ 2,325,900 [1] $ 2,279,800 [2]
Membership [Member]    
Short term investment 552,600 530,900
Activity Stock Due [Member]    
Short term investment $ 1,773,300 $ 1,748,900
[1] Includes $552,600 of Membership stock and $1,773,300 of Activity stock attributable to short-term borrowings and letters of credit.
[2] Includes $530,900 of Membership stock and $1,748,900 of Activity stock due to short-term advances and letters of credit.