Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Financial Instruments [Abstract]

Net Unrealized Gain (Loss) on Open Contracts

The net unrealized gains (losses) on open contracts, reported as a component of "Trading Equity" on the Statements of Financial Condition, and their longest contract maturities were as follows:

	Net Unrealized Gains/(Losses) on Open Contracts								Longest Maturities
Date	Exchange-Traded			Off-Exchange-Traded		Total			Exchange-Traded	Off-Exchange-Traded
		$			$	$
Sep. 30, 2012		(2,097,511	)		543,916		(1,553,595	)	Sep. 2014	Dec. 2012
Dec. 31, 2011		(1,240,461	)		1,330,410		89,949		Sep. 2013	Mar. 2012