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FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details Textual)
 3 Months Ended
Mar. 31, 2017
USD ($)
Percentage Of Management Fee In Average Daily Total Net Assets 0.75%
Estimated Investor Tax Reporting Cost $ 165,000
Percentage Of Fees and Other Waivers Expense 0.15%
Expenses Write Off $ 120,259
BNO [Member]  
Estimated Directors Fees and Expenses 13,500
BNO and Related Public Fund [Member]  
Estimated Directors Fees and Expenses $ 539,350