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CONTRACTS AND AGREEMENTS (Details Textual) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Description Of Marketing Agent Fee |  |  | The fee of the Marketing Agent, which is borne by USCF, is equal to 0.06% on USBO''''s assets up to $3 billion and 0.04% on USBO''''s assets in excess of $3 billion. |
Minimum Amount Of Custody,Fund Accounting and Fund Administration Services Payable |  |  | $ 75,000 |
Annual Fee Payable For Transfer Agency Services |  |  | 20,000 |
Description Of Comibined Net Asset Based Charges |  |  | (a) 0.06% for the first $500 million of USBO''''s, USOF''''s, USNG''''s, US12OF''''s, UGA''''s, USDHO''''s, USSO''''s, US12NG''''s, USCI''''s, CPER''''s, USAG''''s and USMI''''s combined net assets, (b) 0.0465% for USBO''''s, USOF''''s, USNG''''s, US12OF''''s, UGA''''s, USDHO''''s, USSO''''s, US12NG''''s, USCI''''s, CPER''''s, USAG''''s and USMI''''s combined net assets greater than $500 million but less than $1 billion, and (c) 0.035% once USBO''''s, USOF''''s, USNG''''s, US12OF''''s, UGA''''s, USDHO''''s, USSO''''s, US12NG''''s, USCI''''s, CPER''''s, USAG''''s and USMI''''s combined net assets exceed $1 billion. The annual minimum amount will not apply if the asset-based charge for all accounts in the aggregate exceeds $75,000. USCF also pays transaction fees ranging from $7 to $15 per transaction. |
Minimum Transaction Fees Payable |  |  | 7 |
Maximum Transaction Fees Payable |  |  | 15 |
Commission Per Round Turn |  |  | 7 | 15
Brokerage commissions | 8,739 | 7,456 | 25,880 | 20,896
Rebalancing Cost |  |  | 17,220 | 12,206
Creation and Redemption Activity Costs |  |  | $ 8,660 | $ 8,690
Percentage Of Average Daily Assets Net Total |  |  | 0.06% | 0.07%

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- Definition The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 61 -IssueDate 2006-05-01 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 60 -IssueDate 2006-05-01 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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