Intangible Assets (Summary Of Intangible Assets, Net Of Accumulated Amortization Included In The Consolidated Statements) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Beginning balance	$ 145,932,000		$ 141,943,000
Goodwill, Amortization expense	0		0
Goodwill, Ending balance	145,932,000		141,943,000
Other Intangible Assets, Beginning Balance	29,518,000	[1]	21,988,000	[1]
Other Intangible Assets, Amortization expense	(1,298,000)		(981,000)
Other Intangible Assets, Ending Balance	$ 28,220,000	[1]	$ 21,007,000	[1]

[1] (a) Represents customer lists, acquired contracts, core deposit intangibles, and covenants not to compete.