INTEREST INCOME AND INTEREST EXPENSE (Tables)

12 Months Ended

Sep. 30, 2011

INTEREST INCOME AND INTEREST EXPENSE [Abstract]

Interest Income and Interest Expense

The components of interest income and interest expense are as follows:

	Year ended September 30,
	2011			2010			2009
	(in thousands)
Interest income:
Margin balances	$	52,361		$	46,650		$	37,617
Assets segregated pursuant to regulations and other segregated assets		8,424			7,685			14,786
Bank loans, net of unearned income		270,057			257,988			320,167
Available for sale securities		10,815			17,846			24,373
Trading instruments		20,549			18,146			13,112
Stock borrow		6,035			8,448			10,269
Interest income of consolidated VIEs		2			13			71
Other		24,075			14,116			23,189
Total interest income		392,318			370,892			443,584
Interest expense:
Brokerage client liabilities		3,422			3,688			10,958
Retail bank deposits		12,543			16,053			24,023
Stock loan		1,807			3,530			3,838
Borrowed funds		3,969			6,099			7,946
Senior notes		31,320			26,091			2,899
Interest expense of consolidated VIEs		6,049			4,457			4,817
Other		6,720			2,933			2,472
Total interest expense		65,830			62,851			56,953
Net interest income		326,488			308,041			386,631
Less:  provision for loan losses		(33,655	)		(80,413	)		(169,341	)
Net interest income after provision for loan losses	$	292,833		$	227,628		$	217,290