Derivatives and Hedging, Effect of Trading Activities on Statements of Financial Condition (Details) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	$ (1,351,338)		$ (1,105,501)
Unrealized currency loss	(2,411,820)		(2,389,680)
Effect of Trading Activities on Statements of Income [Abstract]
Unrealized currency loss	(22,141)	(4,577)
Net realized	3,377,941	4,415,381
Net change in unrealized	(245,837)	(1,752,230)
Total Trading Results	3,132,104	2,663,151
Commodity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	658,208	2,010,118
Equity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	1,735,606	2,131,999
Foreign Currency [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	1,723,625	399,975
Interest Rate [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	(963,194)	(1,874,364)
Futures and Forward Contracts [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	1,060,482		1,284,179
Futures and Forward Contracts [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	576,680		137,853
Average number of contracts outstanding	562		531
Futures and Forward Contracts [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	84,508		208,488
Average number of contracts outstanding	655		464
Futures and Forward Contracts [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	(180,608)		905,158
Average number of contracts outstanding	6,781		4,815
Futures and Forward Contracts [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss) on open contracts	579,902		32,680
Average number of contracts outstanding	1,545		2,003
Futures and Forward Contracts [Member] \| Long [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	1,148,097		794,510
Unrealized Loss	(277,306)		(493,636)
Futures and Forward Contracts [Member] \| Long [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	113,504		101,521
Unrealized Loss	(83,964)		(62,923)
Futures and Forward Contracts [Member] \| Long [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	236,878		378,456
Unrealized Loss	(143,240)		(157,913)
Futures and Forward Contracts [Member] \| Long [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	153,976		142,465
Unrealized Loss	(24,143)		(206,669)
Futures and Forward Contracts [Member] \| Long [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	643,739		172,068
Unrealized Loss	(25,959)		(66,131)
Futures and Forward Contracts [Member] \| Short [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	676,157		1,184,674
Unrealized Loss	(486,466)		(201,369)
Futures and Forward Contracts [Member] \| Short [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	615,501		147,045
Unrealized Loss	(68,361)		(47,790)
Futures and Forward Contracts [Member] \| Short [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	0		0
Unrealized Loss	(9,130)		(12,055)
Futures and Forward Contracts [Member] \| Short [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	60,656		1,037,514
Unrealized Loss	(371,097)		(68,152)
Futures and Forward Contracts [Member] \| Short [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized Gain	0		115
Unrealized Loss	$ (37,878)		$ (73,372)

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The aggregate fair value amount of unrealized currency gain (loss) for open contract securities owned, at a point in time.

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The gross amount of unrealized loss for open contract securities, before unrealized currency gains (losses), at a point in time.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The number of derivative instruments of a particular group held by the entity.

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- Definition

The aggregate unrealized foreign currency transaction gain (loss) (pretax) included in determining net income for the reporting period. Represents the aggregate of gains (losses) on transactions that are unsettled as of the balance sheet date, which is therefore an adjustment to reconcile income (loss) from continuing operations to net cash provided by or used in continuing operations. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting entity's financial statements. For certain entities, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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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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The sum of the realized and unrealized net gain (loss) on trading securities during the period.

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This item represents the gain (loss) realized during the period from the sale of trading securities.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of trading securities held at each balance sheet date, that was included in earnings for the period. Trading securities are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) and the change in net unrealized holding gain (loss) is included in earnings for the period.

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