Derivative Instruments (Schedule Of Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Other assets	$ 35,255	$ 12,771
Other liabilities	(35,006)	(12,729)
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Other assets	34,405	11,993
Other liabilities	(34,415)	(11,993)
Interest Rate Caps [Member]
Derivatives, Fair Value [Line Items]
Other assets	31	73
Other liabilities	(31)	(73)
Credit Risk Participation Agreements [Member]
Derivatives, Fair Value [Line Items]
Other assets	1	1
Other liabilities	(289)	(195)
Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets	24	437
Other liabilities	(9)	(430)
Mortgage Loan Commitments [Member]
Derivatives, Fair Value [Line Items]
Other assets	790	263
Other liabilities	0	0
Mortgage Loan Forward Sale Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets	4	0
Other liabilities	(4)	0
Forward TBA Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets	0	4
Other liabilities	$ (258)	$ (38)