Investment Securities (Proceeds From Sales Of Securities And Components Of Investment Securities Gains And Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013
Investment [Line Items]
Proceeds from sales of available for sale securities			$ 30,998		$ 0
Proceeds from sales of non-marketable securities			32,901		4,096
Total proceeds			63,899	[1]	4,096	[1]
Investment securities gains, net	(2,558)	(1,568)	7,479		(3,733)
Available-for-sale Securities [Member]
Investment [Line Items]
Available-for-sale Securities, gross realized gain (loss) on sales			(5,197)		0
Gain realized on donation			1,570		1,375
Other-than-temporary impairment recognized on debt securities			(977)		(930)
Non-Marketable [Member]
Investment [Line Items]
Gains realized on sales			1,472		603
Losses realized on sales			(134)		(2,979)
Fair value adjustments, net			$ 10,745		$ (1,802)

[1] Available for sale and non-marketable securities