Derivative Financial Instruments - Narrative (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Derivitive Financial Instruments [Line Items]
Cash Held by Borker as Margin on Eurodollar Futures Contracts	$ 0	$ 34,000
Type of Derivative Instrument	Eurodollar futures contracts	Eurodollar futures contracts
Underlying Risk	interest rate risk	interest rate risk
Losses on Eurodollar futures contracts	$ (39,725)	$ (138,525)

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Description of the risk underlying the derivative not designated as a hedging instrument. For example, interest rate risk, currency exchange risk, credit risk, or price risk.

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- Definition

Description of the type of derivative instrument identified. For example, swaps, swaptions, forwards.

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Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

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