Income Tax (Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Currently payable
Federal	$ 3,231	$ 2,849	$ 2,652
Deferred
Federal	1,342	1,317	1,706
Effect of "Tax Cuts and Jobs Act"	2,000
State	220	220	220
Income Tax Expense (Benefit), Total	$ 6,793	$ 4,386	$ 4,578