Goodwill And Other Intangible Assets (Summary Of Core Deposit Intangibles) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Gross carrying amount				$ 21,190	$ 9,802
Accumulated amortization				(7,909)	(7,403)
Total	$ 2,399	$ 2,939	$ 2,939	$ 13,281	$ 2,399
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	2,399	2,939
Amortization expense	(506)	(540)	(500)
Ending balance	13,281	$ 2,399	$ 2,939
Poage Bankshares, Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	8,054
Farmers Deposit Bancorp, Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite-lived Intangible Assets Acquired	$ 3,334