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Euro Deposits - Additional Information (Detail) | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2024 EUR (€) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Jun. 30, 2024 EUR (€) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€)
Cash and Cash Equivalents [Abstract] |  |  |  |  |  |  |
Annual nominal rate | 2.50% |  |  |  | 2.50% |  |
Principal deposits | $ 55,027,871 | € 46,132,058 | $ 75,017,103 | € 143,007,863 |  |  |
Principal redemptions | 89,695,306 | € 83,037,143 | $ 115,014,404 | € 212,205,189 |  |  |
Deposits, interest bearing | $ 173,046,893 |  |  |  | € 161,461,403 | $ 219,125,708 | € 198,364,675

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