XML 42 R31.htm IDEA: XBRL DOCUMENT v3.25.2
Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
United States Treasury Obligations, at value   $ 53,470,939
Exchange-Traded Fund $ 53,983,710 54,014,400
Money Market Mutual Fund 152,609,908 100,993,456
Total Investments in Securities 206,593,618 208,478,795
Commodity Futures Contracts, Depreciation (4,748,872)  
Commodity Futures Contracts, Appreciation   10,025,351
Total Other Investments (4,748,872)  
Total Investments 201,844,746 218,504,146
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exchange-Traded Fund 53,983,710 54,014,400
Money Market Mutual Fund 152,609,908 100,993,456
Total Investments in Securities 206,593,618 155,007,856
Commodity Futures Contracts, Depreciation (4,748,872)  
Commodity Futures Contracts, Appreciation   10,025,351
Total Other Investments (4,748,872)  
Total Investments $ 201,844,746 165,033,207
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
United States Treasury Obligations, at value   53,470,939
Total Investments in Securities   53,470,939
Total Investments   $ 53,470,939