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Canadian Dollar Deposits - Additional Information (Detail)	9 Months Ended			12 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 CAD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 CAD ($)	Sep. 30, 2023 CAD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CAD ($)
Cash and Cash Equivalents [Abstract]
Principal deposits	$ 68,494,921	$ 92,845,961	$ 34,161,249	$ 73,340,680
Principal redemptions	90,926,263	$ 122,165,790	$ 65,157,665	117,356,152
Withdrawals (to pay expenses)				$ 444,805
Deposits, interest bearing	$ 75,901,820				$ 102,619,260	$ 97,375,615	$ 131,939,089
Annual nominal rate	2.76%				2.76%

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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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