DERIVATIVE INSTRUMENTS AND OFFSETTING ASSETS AND LIABILITIES (Offsetting Of Derivative Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Derivative [Line Items]
Gross Amount Recognized	$ 9,904	$ 15,876	$ 25,452
Gross Amount Offset
Net Amount Recognized	9,904	15,876	25,452
Financial Instruments
Financial Collateral Pledged
Net Amount	9,904	15,876	25,452
Gross Amount Recognized	405,403	463,625	436,372
Gross Amount Offset
Net Amount Recognized	405,403	463,625	436,372
Financial Instruments	(399,815)	(454,002)	(415,949)
Financial Collateral Pledged	(5,287)	(9,175)	(16,854)
Net Amount	301	448	3,569
Forward Commitments [Member]
Derivative [Line Items]
Gross Amount Recognized	4,617	6,701	8,840
Gross Amount Offset
Net Amount Recognized	4,617	6,701	8,840
Financial Instruments
Financial Collateral Pledged
Net Amount	4,617	6,701	8,840
Gross Amount Recognized	301	448	3,569
Gross Amount Offset
Net Amount Recognized	301	448	3,569
Financial Instruments
Financial Collateral Pledged
Net Amount	301	448	3,569
Loan/Lease Interest Rate Swaps [Member]
Derivative [Line Items]
Gross Amount Recognized	5,287	9,175	16,612
Gross Amount Offset
Net Amount Recognized	5,287	9,175	16,612
Financial Instruments
Financial Collateral Pledged
Net Amount	5,287	9,175	16,612
Gross Amount Recognized	5,287	9,175	16,854
Gross Amount Offset
Net Amount Recognized	5,287	9,175	16,854
Financial Instruments
Financial Collateral Pledged	(5,287)	(9,175)	(16,854)
Repurchase Arrangements [Member]
Derivative [Line Items]
Gross Amount Recognized	399,815	454,002	415,949
Gross Amount Offset
Net Amount Recognized	399,815	454,002	415,949
Financial Instruments	$ (399,815)	(454,002)	$ (415,949)
Financial Collateral Pledged