CORPORATE LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Summary of corporate loans
Corporate loans transferred from held for investment to held for sale	$ 21,388	$ 46,077
Corporate loans transferred from held for sale to held for investment	0	7,504
Charge-offs recorded	28,313	2,098
Corporate loans, held for sale (in dollars)	107,395		128,289
Net charge for lower of cost or estimated fair value adjustment	4,749	(10,401)
Corporate Loan Held for Investment
Summary of corporate loans
Corporate loans transferred from held for investment to held for sale	21,400	46,100
Corporate loans transferred from held for sale to held for investment	0	7,500
Corporate Loans Held for Sale
Summary of corporate loans
Corporate loans, held for sale (in dollars)	107,400	297,700
Net charge for lower of cost or estimated fair value adjustment	$ 4,700	$ 10,400