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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2023
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 $ 64,610 $ 0 $ 128,510  
Percentage of fees and other waivers expense     0.15%    
Scenario Forecast          
Fees paid by the fund and related party transactions          
Estimated investor tax reporting cost         $ 150,000
BNO | Scenario Forecast          
Fees paid by the fund and related party transactions          
Estimated directors fees and expenses         82,000
BNO and other Related Public Funds | Scenario Forecast          
Fees paid by the fund and related party transactions          
Estimated directors fees and expenses         $ 1,210,000