Federal Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Federal Income Taxes [Abstract]
Deferred tax assets: Allowance for credit losses	$ 1,227	$ 1,827
Deferred tax assets: Unrealized losses on securities	372	560
Deferred tax assets: Unrealized losses on reclassified securities		2
Deferred tax assets: Unrealized loss on pension obligation	388	609
Deferred tax assets: Capital loss disallowance	2	4
Deferred tax assets: State net operating losses	739	620
Deferred tax assets: Unvested stock awards	70	103
Deferred tax assets: Deferred compensation (SERP)	435	680
Deferred tax assets: Nonqualified stock options	11	48
Deferred tax assets: Depreciation		123
Deferred tax assets: Pension	24	6
Deferred tax assets: Non-accrued interest	501	661
Deferred tax assets: Provision for unfunded loans	73	117
Deferred tax assets: OREO write-downs	38	52
Deferred Tax Assets: Core deposit intangible	11	16
Deferred tax assets: Accrued expenses	57	165
Deferred tax assets: Purchase accounting loan general credit mark	584	1,482
Deferred tax assets: Purchase accounting loan specific credit mark	51	273
Deferred tax assets: Purchase accounting loan interest rate mark	84	96
Deferred tax assets: Purchase accounting CD rate mark	60	236
Deferred tax assets: Purchase accounting term FHLBP advances	34	163
Deferred tax assets: Organization Costs	10	23
Deferred tax assets: Other Reserves - reserve for unfunded		29
Total gross deferred tax assets	4,771	7,895
Deferred tax liabilities: Depreciation	(180)
Deferred tax liabilities: Bank shares tax credit	(140)	(204)
Deferred tax liabilities: Prepaid expenses	(173)	(313)
Deferred tax liabilities: Mortgage servicing rights	(29)	(44)
Deferred tax liabilities: Deferred gain from insurance proceeds		(401)
Deferred tax liabilities: Bad debt reserve	(117)	(241)
Deferred tax liabilities: Market discount accretion		(18)
Deferred tax liabilities: Purchase accounting core deposit intangible	(83)	(165)
Deferred tax liabilities: Prepaid expenses (acquired)		(23)
Deferred tax liabilities: Other reserves - reserve for unfunded	(6)
Deferred tax liabilities: Purchase accounting deferred loan fees	(323)	(615)
Total gross deferred tax liabilities	(1,051)	(2,024)
Valuation allowance	(740)	(621)
Net deferred tax asset	$ 2,980	$ 5,250