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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Percentage of management fee in average daily total net assets 0.75%    
Registration fees and offering expenses $ 0 $ 0 $ 157,620
Directors fees and expenses 50,126 80,249 82,611
License fees 0 0 6,375
Investor reporting costs 385,395 123,795 239,277
Related Party | Company And Other Related Public Funds      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Directors fees and expenses $ 916,574 $ 1,210,000 $ 1,258,000
Related Party | Related public funds other than Usci and Cper      
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS      
Licensing fee expense percentage on net assets 0.015%