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Income Taxes (Net Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Allowance for loan losses	$ 7,810	$ 8,550
Deferred compensation	1,095	1,771
Investment in limited partnerships	1,191	660
SERP agreements	418	417
Interest on nonaccrual loans	191	106
Share-based compensation	586	541
Net unrealized loss on securities available for sale		2,848
Other	224	138
Gross deferred tax assets	11,515	15,031
Prepaid expenses	498	583
Prepaid pension costs	897	1,415
Intangible assets	2,643	2,581
Depreciation and amortization	1,961	2,096
Net unrealized gain on securities available for sale	301
Loan servicing assets	289	258
Other	550	240
Gross deferred tax liabilities	7,139	7,173
Net deferred tax asset	$ 4,376	$ 7,858

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