LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance for Credit Losses on Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 81,033	$ 91,602	$ 137,710
Loans charged-off	(21,923)	(25,835)	(78,070)
Recoveries of loans previously charged-off	14,764	20,266	29,962
Net loans charged-off	(7,159)	(5,569)	(48,108)
(Benefit) provision for loan losses	(7,000)	(5,000)	2,000
Balance, end of period	$ 66,874	$ 81,033	$ 91,602