Derivative Instruments (Summary Of The Effects Of Derivative Instruments On Consolidated Statements Of Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total derivatives	$ (1)	$ 14	$ 7
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative interest and fees on loans	(1)	14	7
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total derivatives	1,566	1,455	598
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative other non-interest income	1,674	1,140	743
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative other non-interest income	33	0	0
Not Designated as Hedging Instrument [Member] | Credit Risk Participation Agreements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative other non-interest income	122	234	25
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative other non-interest income	(263)	81	(161)
Not Designated as Hedging Instrument [Member] | Mortgage Loan Commitments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative loan fees and sales	0	0	(20)
Not Designated as Hedging Instrument [Member] | Mortgage Loan Forward Sale Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative loan fees and sales	$ 0	$ 0	$ 11