DERIVATIVE INSTRUMENTS AND OFFSETTING ASSETS AND LIABILITIES (Offsetting Of Derivative Assets And Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Derivative [Line Items]
Gross Amount Recognized	$ 20,983	$ 19,508	$ 24,497
Gross Amount Offset
Net Amount Recognized	20,983	19,508	24,497
Financial Instruments
Financial Collateral Pledged
Net Amount	20,983	19,508	24,497
Gross Amount Recognized	484,137	422,188	446,871
Gross Amount Offset
Net Amount Recognized	484,137	422,188	446,871
Financial Instruments	(468,969)	(405,937)	(425,203)
Financial Collateral Pledged	(14,041)	(15,856)	(19,596)
Net Amount	1,127	395	2,072
Forward Commitments [Member]
Derivative [Line Items]
Gross Amount Recognized	6,942	3,894	4,901
Gross Amount Offset
Net Amount Recognized	6,942	3,894	4,901
Financial Instruments
Financial Collateral Pledged
Net Amount	6,942	3,894	4,901
Gross Amount Recognized	1,127	395	2,072
Gross Amount Offset
Net Amount Recognized	1,127	395	2,072
Financial Instruments
Financial Collateral Pledged
Net Amount	1,127	395	2,072
Loan/Lease Interest Rate Swaps [Member]
Derivative [Line Items]
Gross Amount Recognized	14,041	15,614	19,596
Gross Amount Offset
Net Amount Recognized	14,041	15,614	19,596
Financial Instruments
Financial Collateral Pledged
Net Amount	14,041	15,614	19,596
Gross Amount Recognized	14,041	15,856	19,596
Gross Amount Offset
Net Amount Recognized	14,041	15,856	19,596
Financial Instruments
Financial Collateral Pledged	(14,041)	(15,856)	(19,596)
Repurchase Arrangements [Member]
Derivative [Line Items]
Gross Amount Recognized	468,969	405,937	425,203
Gross Amount Offset
Net Amount Recognized	468,969	405,937	425,203
Financial Instruments	$ (468,969)	(405,937)	$ (425,203)
Financial Collateral Pledged