Income Taxes (Schedule of tax effects of temporary differences of the deferred tax assets and deferred tax liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for loan losses	$ 2,041	$ 3,141
Deferred expenses	39	47
Deferred compensation	1,538	1,271
Unrecognized pension liability	1,037	1,272
Postretirement liability	920	954
Deferred loss on OREO		83
Deferred loan fees		158
Unrealized loss on securities	727
State tax NOLs		990
Other	431	324
Gross deferred tax assets	6,733	8,240
Deferred tax liabilities:
Prepaid expenses	(262)	(217)
Prepaid pension	(1,275)	(1,276)
Deferred loan fees	(154)
Depreciation and amortization	(525)	(375)
Unrealized gain on securities		(264)
Mortgage servicing rights	(711)	(645)
Gross deferred tax liabilities	(2,927)	(2,777)
Net deferred tax asset	3,806	5,463
Deferred tax valuation allowance	(454)	(1,760)
Deferred tax assets, net of allowance	$ 3,352	$ 3,703