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Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
United States Treasury Obligations $ 54,072,308 $ 53,851,960
Exchange-Traded Fund 21,531,840 21,532,860
Money Market Mutual Fund 78,702,911 72,736,020
Total Investments in Securities 154,307,059 148,120,840
Commodity Futures Contracts   3,571,650
Commodity Futures Contracts (5,858,893) (187,020)
Total Other Investments   3,384,630
Total Investments 148,448,166 151,505,470
Level 1 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Exchange-Traded Fund 21,531,840 21,532,860
Money Market Mutual Fund 78,702,911 72,736,020
Total Investments in Securities 100,234,751 94,268,880
Commodity Futures Contracts   3,571,650
Commodity Futures Contracts (5,858,893) (187,020)
Total Other Investments   3,384,630
Total Investments 94,375,858 97,653,510
Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
United States Treasury Obligations 54,072,308 53,851,960
Total Investments in Securities 54,072,308 53,851,960
Total Investments $ 54,072,308 $ 53,851,960