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

12 Months Ended

Dec. 31, 2012

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

Amounts Receivable From Brokers, Dealers, And Clearing Organizations

	December 31,
	2012		2011
Deposits paid for securities borrowed	$	153,819	$	193,509
Receivable from clearing organizations		115,996		43,642
Securities failed to deliver		6,409		15,485
	$	276,224	$	252,636

Amounts Payable To Brokers, Dealers, And Clearing Organizations

	December 31,
	2012		2011
Deposits received from securities loaned	$	19,218	$	124,711
Payable to clearing organizations		9,246		3,984
Securities failed to receive		4,747		11,216
	$	33,211	$	139,911