DERIVATIVE INSTRUMENTS AND OFFSETTING ASSETS AND LIABILITIES (Offsetting Of Derivative Assets And Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Derivative [Line Items]
Gross Amount Recognized	$ 23,721	$ 19,750	$ 27,497
Gross Amount Offset
Net Amount Recognized	$ 23,721	$ 19,750	$ 27,497
Financial Instruments
Financial Collateral Pledged
Net Amount	23,721	$ 19,750	$ 27,497
Gross Amount Recognized	$ 450,178	$ 422,188	$ 408,553
Gross Amount Offset
Net Amount Recognized	$ 450,178	$ 422,188	$ 408,553
Financial Instruments	(431,089)	(405,937)	(384,829)
Financial Collateral Pledged	(17,285)	(15,856)	(22,178)
Net Amount	1,804	395	1,546
Forward Commitments [Member]
Derivative [Line Items]
Gross Amount Recognized	$ 6,436	$ 3,894	$ 5,319
Gross Amount Offset
Net Amount Recognized	$ 6,436	$ 3,894	$ 5,319
Financial Instruments
Financial Collateral Pledged
Net Amount	6,436	$ 3,894	$ 5,319
Gross Amount Recognized	$ 1,804	$ 395	$ 1,546
Gross Amount Offset
Net Amount Recognized	$ 1,804	$ 395	$ 1,546
Financial Instruments
Financial Collateral Pledged
Net Amount	1,804	$ 395	$ 1,546
Loan/Lease Interest Rate Swaps [Member]
Derivative [Line Items]
Gross Amount Recognized	$ 17,285	$ 15,856	$ 22,178
Gross Amount Offset
Net Amount Recognized	$ 17,285	$ 15,856	$ 22,178
Financial Instruments
Financial Collateral Pledged
Net Amount	17,285	$ 15,856	$ 22,178
Gross Amount Recognized	$ 17,285	$ 15,856	$ 22,178
Gross Amount Offset
Net Amount Recognized	$ 17,285	$ 15,856	$ 22,178
Financial Instruments
Financial Collateral Pledged	(17,285)	$ (15,856)	$ (22,178)
Repurchase Arrangements [Member]
Derivative [Line Items]
Gross Amount Recognized	$ 431,089	$ 405,937	$ 384,829
Gross Amount Offset
Net Amount Recognized	$ 431,089	$ 405,937	$ 384,829
Financial Instruments	$ (431,089)	$ (405,937)	$ (384,829)
Financial Collateral Pledged