Intangible Assets (Summary Of Intangible Assets, Net Of Accumulated Amortization Included In The Consolidated Statements) (Details) - USD ($)		3 Months Ended
		Mar. 31, 2016		Mar. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Beginning balance		$ 191,307,000	[1]	$ 145,932,000
Goodwill, Amortization expense		0		0
Goodwill, Ending balance		191,307,000		145,932,000
Other Intangible Assets, Beginning Balance	[2]	26,215,000		29,518,000
Other Intangible Assets, Amortization expense	[2]	(1,300,000)		(1,298,000)
Other Intangible Assets, Ending Balance	[2]	$ 24,915,000		$ 28,220,000

[1] The increase in goodwill was related to the TAF acquisition in fourth quarter 2015.

[2] Represents customer lists, acquired contracts, core deposit intangibles, and covenants not to compete.