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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - $ / item	Dec. 31, 2020	Dec. 31, 2019
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	350
Redemption Baskets [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Number of units per basket		50,000