Federal Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets
Allowance for loan losses	$ 3,766	$ 3,429
Deferred compensation	986	1,017
Purchase accounting	23	22
Deferred loan fees and costs, net	160	160
Capital loss carryover	280	813
Other than temporary impairment of investments	260	376
Accumulated other comprehensive loss	2,171	1,917
AMT Credit		192
Depreciation	45
Other	561	423
Deferred Tax Assets, Gross, Total	8,252	8,349
Valuation allowance	(467)	(1,000)
Total gross deferred tax assets	7,785	7,349
Deferred Tax Liabilities
Depreciation		334
Joint ventures and partnerships	36	21
Pension	1,886	2,199
Mortgage servicing rights	19	37
Total gross deferred tax liabilities	1,941	2,591
Net deferred tax asset	$ 5,844	$ 4,758