Investments in Affiliates - Summary of Transactions in, and Earnings from, Investments in Affiliates (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Investments In And Advances To Affiliates [Line Items]
Investment Owned, at Fair Value, Beginning Balance			$ 46,368,670
Change in Unrealized Appreciation (Depreciation)		$ (843)	(21,417)	$ (31,483)
Investment Owned, at Fair Value, Ending Balance	$ 42,723,627		42,723,627
Dividend Income	436,492	632,166	818,779	1,380,471
Affiliated Investments [Member]
Investments In And Advances To Affiliates [Line Items]
Investment Owned, at Fair Value, Beginning Balance	45,395,218	54,757,375	26,514,962	30,474,423
Purchases at Cost	6,886,906	19,824,646	43,818,023	76,902,853
Proceeds from Sales	(9,558,497)	(35,728,035)	(27,609,358)	(68,510,438)
Change in Unrealized Appreciation (Depreciation)				(12,852)
Investment Owned, at Fair Value, Ending Balance	42,723,627	38,853,986	42,723,627	38,853,986
Dividend Income	436,492	632,166	818,779	1,380,471
Affiliated Investments [Member] \| Exchange Traded Funds [Member]
Investments In And Advances To Affiliates [Line Items]
Investment Owned, at Fair Value, Beginning Balance		10,040,744		10,053,596
Change in Unrealized Appreciation (Depreciation)				(12,852)
Investment Owned, at Fair Value, Ending Balance		10,040,744		10,040,744
Dividend Income		125,017		254,149
Affiliated Investments [Member] \| Money Market Mutual Fund - Invesco Government & Agency Portfolio, Institutional Class [Member]
Investments In And Advances To Affiliates [Line Items]
Investment Owned, at Fair Value, Beginning Balance	45,395,218	44,716,631	26,514,962	20,420,827
Purchases at Cost	6,886,906	19,824,646	43,818,023	76,902,853
Proceeds from Sales	(9,558,497)	(35,728,035)	(27,609,358)	(68,510,438)
Investment Owned, at Fair Value, Ending Balance	42,723,627	28,813,242	42,723,627	28,813,242
Dividend Income	$ 436,492	$ 507,149	$ 818,779	$ 1,126,322

Amount of operating dividend income on securities.

- Definition

Fair value of investment in security owned.

+ References

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