Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Tables)

3 Months Ended

Mar. 31, 2012

Receivables From And Payables To Brokers, Dealers And Clearing Organizations [Abstract]

Amounts Receivable From Brokers, Dealers, And Clearing Organizations

	March 31,2012		December 31,2011
Deposits paid for securities borrowed	$	200,734	$	193,509
Receivable from clearing organizations		14,188		43,642
Securities failed to deliver		22,336		15,485
	$	237,258	$	252,636

Amounts Payable To Brokers, Dealers, And Clearing Organizations

	March 31,2012		December 31,2011
Deposits received from securities loaned	$	141,101	$	124,711
Securities failed to receive		24,791		11,216
Payable to clearing organizations		3,545		3,984
	$	169,437	$	139,911