Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Financial Instruments [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS-BALANCE SHEET INFORMATION

Derivative Financial Instruments Not Designated as Hedging Instruments under FASB ASC 815	Balance Sheet Classification	Unrealized Gain / (Loss)  as of June 30, 2012			Unrealized Gain / (Loss)  as of December 31, 2011
Foreign currency forward contracts	Other investments, at fair value	$	66		$	—
TBAs	Investments-trading		38			—
TBAs	Trading securities sold, not yet purchased		(47	)		(16	)
		$	57		$	(16	)

DERIVATIVE FINANCIAL INSTRUMENTS-STATEMENT OF OPERATIONS INFORMATION

Derivative Financial Instruments Not Designated as Hedging Instruments under FASB ASC 815	Income Statement Classification	Six Months Ended June 30, 2012			Six Months Ended June 30, 2011
Foreign currency forward contracts	Revenues—principal transactions and other income	$	(35	)	$	(219	)
EuroDollar futures contracts	Revenues—net trading		—			(2	)
TBAs	Revenues—net trading		254			(7,970	)
		$	219		$	(8,191	)

Derivative Financial Instruments Not Designated as Hedging Instruments under FASB ASC 815	Income Statement Classification	Three Months Ended June 30, 2012			Three Months Ended June 30, 2011
Foreign currency forward contracts	Revenues—principal transactions and other income	$	(35	)	$	(922	)
EuroDollar futures contracts	Revenues—net trading		—			(64	)
TBAs	Revenues—net trading		156			(8,113	)
		$	121		$	(9,099	)