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Offsetting Assets And Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2013
Offsetting Assets And Liabilities [Line Items] |
Offsetting Assets |
Offsetting of Financial Assets and Derivative Assets as of March 31, 2013 and December 31, 2012
Assets |  | Gross Amounts of Recognized Assets |  |  | Gross Amounts Offset in the Statements of Financial Condition |  |  | Net Amounts of Assets Presented in the Statements of Financial Condition |
At March 31, 2013: |  |  |  |  |  |  |  |  |
Futures contracts |  | $ | 4,053,150 |  |  | $ | – |  |  | $ | 4,053,150 |
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |
Futures contracts |  | $ | 1,816,340 |  |  | $ | – |  |  | $ | 1,816,340 |
Offsetting Liabilities |
Offsetting of Financial Liabilities and Derivative Liabilities as of March 31, 2013 and December 31, 2012
Liabilities |  | Gross Amounts of Recognized Liabilities |  |  | Gross Amounts Offset in the Statements of Financial Condition |  |  | Net Amounts of Liabilities Presented in the Statements of Financial Condition |
At March 31, 2013: |  |  |  |  |  |  |  |  |
Futures contracts |  | $ | 183,680 |  |  | $ | – |  |  | $ | 183,680 |
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |
Futures contracts |  | $ | 259,430 |  |  | $ | – |  |  | $ | 259,430 |
Collateral Held By Counterparty [Member] |
Offsetting Assets And Liabilities [Line Items] |
Offsetting Assets |
Financial Assets, Derivative Assets, and Collateral Held by Counterparty as of March 31, 2013 and December 31, 2012
|  |  |  |  | Gross Amounts Not Offset in the Statements of Financial Condition |  |  |  |
|  | Net Amounts of Assets Presented in the Statements of Financial Condition (A) |  |  | Financial Instruments Collateral Received (B) |  |  | Cash Collateral Received (C) |  |  | Net Amount (D) = (A) - (B) - (C) |
At March 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |
UBS Securities |  | $ | 4,053,150 |  |  | $ | – |  |  | $ | – |  |  | $ | 4,053,150 |
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
UBS Securities |  | $ | 1,816,340 |  |  | $ | – |  |  | $ | – |  |  | $ | 1,816,340 |
Offsetting Liabilities |
Financial Liabilities, Derivative Liabilities, and Collateral Pledged by Counterparty as of March 31, 2013 and December 31, 2012
|  |  |  |  | Gross Amounts Not Offset in the Statements of Financial Condition |  |  |  |
|  | Net Amounts of Liabilities Presented in the Statements of Financial Condition (A) |  |  | Financial Instruments Collateral Pledged (B) |  |  | Cash Collateral Pledged (C) |  |  | Net Amount (D) = (A) - (B) - (C) |
At March 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |
UBS Securities |  | $ | 183,680 |  |  | $ | 131,790 |  |  | $ | 51,890 |  |  | $ | – |
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
UBS Securities |  | $ | 259,430 |  |  | $ | 148,454 |  |  | $ | 110,976 |  |  | $ | –

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- Definition Tabular disclosure of derivative and other financial assets that are subject to offsetting, including master netting arrangements. + References No definition available. + Details
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- Definition Tabular disclosure of derivative and other financial liabilities that are subject to offsetting, including master netting arrangements. + References No definition available. + Details
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