Additional trust expenses paid by sponsor.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of incidental rights distributed in payment of sponsors fee.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Number of incidental rights held.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	credit
Period Type:	instant

- Definition

Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

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Balance Type:	na
Period Type:	instant

- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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-Section 50
-Paragraph 1
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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+ Details

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Balance Type:	na
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- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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- Details

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Related Parties - Additional Information (Detail)	3 Months Ended		9 Months Ended
Related Parties - Additional Information (Detail)	Sep. 30, 2026 USD ($) Right shares	Sep. 30, 2025 USD ($) Right	Sep. 30, 2026 USD ($) Right shares	Sep. 30, 2025 USD ($) Right	Dec. 31, 2025 USD ($) Right shares
Related Party Transaction [Line Items]
Shares of the Trust, held by related parties \| shares	14,977		14,977		14,977
Number of Incidental Rights held \| Right	0		0		0
Number of Incidental Rights distributed \| Right	0	0	0	0
Related party sponsor fee percentage			2.50%
Additional trust expenses paid by sponsor	$ 0	$ 0	$ 0	$ 0
Related Party
Related Party Transaction [Line Items]
Sponsor's Fees incurred	497,529	$ 1,439,247	1,713,809	$ 4,129,653
Sponsor's Fee payable, related party	0		0		$ 0
Sponsor
Related Party Transaction [Line Items]
Related party maximum transaction in a fiscal year			600,000
Sponsor's Fee payable, related party	$ 0		0		$ 0
Non Sponsor Paid Expenses
Related Party Transaction [Line Items]
Related party maximum transaction in a fiscal year			$ 600,000