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Statements of Changes in Shareholders' Equity and Redeemable Capital Shares (Unaudited) - USD ($)
Total
Retained Earnings [Member]
Redeemable Capital Shares [Member]
Balance, Shares at Dec. 31, 2021     1,800,000
Balance at Dec. 31, 2021     $ 139,593,928
Purchases of Shares     $ 15,373,766
Purchases of Shares, Shares     200,000
Redemption of Shares     $ (23,299,351)
Redemption of Shares, Shares     (300,000)
Net Increase (Decrease) due to Share Transactions     $ (7,925,585)
Net Increase (Decrease) due to Share Transactions, shares     (100,000)
Net Comprehensive Income (Loss) $ (137,611) $ (137,611)  
Adjustment of Redeemable Capital Shares to Redemption Value related to Retained Earnings $ 137,611 137,611 $ (137,611)
Adjustment of Redeemable Capital Shares to Redemption Value     $ 1,664,849
Balance, Shares at Mar. 31, 2022     1,700,000
Balance at Mar. 31, 2022     $ 133,195,581
Balance, Shares at Dec. 31, 2022 1,350,000   1,350,000
Balance at Dec. 31, 2022 $ 97,493,449   $ 97,493,449
Purchases of Shares     $ 39,596,837
Purchases of Shares, Shares     550,000
Redemption of Shares     $ (36,255,464)
Redemption of Shares, Shares     (500,000)
Net Increase (Decrease) due to Share Transactions     $ 3,341,373
Net Increase (Decrease) due to Share Transactions, shares     50,000
Distributions (400,427) (400,427)  
Net Comprehensive Income (Loss) 458,136 458,136  
Adjustment of Redeemable Capital Shares to Redemption Value related to Retained Earnings $ (57,709) $ (57,709) $ 57,709
Adjustment of Redeemable Capital Shares to Redemption Value     $ 377,418
Balance, Shares at Mar. 31, 2023 1,400,000   1,400,000
Balance at Mar. 31, 2023 $ 101,269,949   $ 101,269,949