VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES TRADING (Details) RSO (RSO [Member], USD $)	12 Months Ended
	Dec. 31, 2012 Security	Dec. 31, 2011 Security
RSO [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities purchased	2	27
Securities sold	15	11
Net realized gain (loss)	$ 5,500,000	$ 8,000,000
Position liquidated	1
Position liquidated gains	$ 224,000
Number of trading securities held	13	27