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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
Dec. 31, 2019
$ / item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets 350
Redemption Baskets [Member]  
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
Number of units per basket 50,000