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Canadian Dollar Deposits - Additional Information (Detail)	6 Months Ended			12 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 CAD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 CAD ($)	Jun. 30, 2025 CAD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 CAD ($)
Cash and Cash Equivalents [Abstract]
Principal deposits	$ 34,796,035	$ 48,866,337	$ 7,174,155	$ 34,206,434
Principal redemptions	6,799,834	$ 9,773,267	$ 25,269,499	$ 48,866,326
Deposits, interest bearing	$ 93,112,816				$ 127,052,438	$ 61,159,344	$ 87,959,368
Annual nominal rate	0.91%				0.91%

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