Investment Securities (Schedule Of Realized Gross Gains And Losses On Sale From Available For Sale Portfolio) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Investment Securities [Abstract]
Gross gains on sales of securities	$ 77,000		$ 12,000		$ 5,734,000		$ 42,000
Gross losses on sales of securities	0		(363,000)		0		(369,000)
Net gain/(loss) on sales of securities	77,000	[1]	(351,000)	[1]	5,734,000	[1]	(327,000)	[1]
Venture capital investments	(2,000,000)	[2]	0	[2]	(2,000,000)	[2]	0	[2]
Total securities gain/ (loss), net	(1,923,000)		(351,000)		3,734,000		(327,000)
Proceeds from sales			18,900,000		5,700,000		18,900,000
Equity securities proceeds from sales					$ 1,400,000

[1] Proceeds from sales for the three months ended June 30, 2014 were not material. Proceeds for the six months ended June 30, 2014 were $5.7 million, inclusive of $1.4 million of equity securities. Proceeds from the three and six months ended June 30, 2013, were $18.9 million. Includes write-offs and /or unrealized fair value adjustments related to venture capital investments.

[2] Includes write-offs and /or unrealized fair value adjustments related to venture capital investments