BORROWINGS, Narrative (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Redemption of Trust Preferred Security [Abstract]
Redemption Date of Trust Preferred	March 7, 2013
Debt Instrument, Interest Rate, Stated Percentage	7.85%
Payments for Repurchase of Trust Preferred Securities	$ 66,100
Accrued Distributions Paid on Redeemed Trust Preferred	900
Subordinated debenture liability at fair value			67,300
FHLB Advance Termination [Abstract]
Extinguishment Date of FHLB Advances	Feb. 08, 2013
Restructured FHLB Advances	400,000
Restructured FHLB Advance Unamortized Prepayment Penalty		$ 64,888	$ 65,500
Trusts [Abstract]
Number of statutory business trusts	5