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Euro Deposits - Additional Information (Detail)
6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2023
EUR (€)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Jun. 30, 2023
EUR (€)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Cash and Cash Equivalents [Abstract]              
Annual nominal rate 2.20%       2.20%    
Principal deposits $ 75,017,103 € 69,197,344 $ 250,958,662 € 679,568,682      
Principal redemptions 115,014,404 € 106,101,530 $ 207,261,317 596,144,853      
Withdrawals (to pay expenses)       € 1,970,473      
Deposits, interest bearing $ 251,647,754       € 230,657,815 $ 285,555,944 € 267,562,001