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Euro Deposits - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2023 EUR (€)	Dec. 31, 2022 EUR (€)
Cash and Cash Equivalents [Abstract]
Annual nominal rate	2.70%				2.70%
Principal deposits	$ 149,222,668	€ 143,007,863	$ 703,013,411	€ 679,568,682
Principal redemptions	229,147,352	€ 212,205,189	622,725,114	596,144,853
Withdrawals (to pay expenses)				€ 1,970,473
Deposits, interest bearing	$ 219,125,708		$ 285,555,944		€ 198,364,675	€ 267,562,001

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Rate of interest on investment.

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