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Euro Deposits - Additional Information (Detail)
9 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
Sep. 30, 2024
EUR (€)
Sep. 30, 2023
USD ($)
Dec. 31, 2023
EUR (€)
Sep. 30, 2024
EUR (€)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
EUR (€)
Cash and Cash Equivalents [Abstract]              
Annual nominal rate 2.30%       2.30%    
Principal deposits $ 80,476,324 € 69,197,826 $ 124,870,310 € 143,007,863      
Principal redemptions 104,814,993 € 96,877,633 $ 179,877,697 € 212,205,189      
Deposits, interest bearing $ 190,494,276       € 170,684,868 $ 219,125,708 € 198,364,675