Accumulated Other Comprehensive Loss (Schedule of accumulated other comprehensive loss activity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 113,341	$ 121,862	$ 125,969	$ 116,499
Balance	$ 106,802	$ 124,204	$ 106,802	$ 124,204
Income tax rate	21.00%	21.00%	21.00%	21.00%
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (23,761)	$ (4,731)	$ (6,635)	$ (3,791)
Other comprehensive loss before reclassifications	(8,800)	(592)	(26,160)	(1,674)
Amounts reclassified from accumulated other comprehensive loss	58	71	292	213
Period change	(8,742)	(521)	(25,868)	(1,461)
Balance	(32,503)	(5,252)	(32,503)	(5,252)
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(4,563)	(4,605)	(3,901)	(4,784)
Other comprehensive loss before reclassifications	42	(120)	(726)	(83)
Amounts reclassified from accumulated other comprehensive loss	52	71	158	213
Period change	94	(49)	(568)	130
Balance	(4,469)	(4,654)	(4,469)	(4,654)
Unrealized (losses) gains on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(19,198)	(126)	(2,734)	993
Other comprehensive loss before reclassifications	(8,842)	(472)	(25,434)	(1,591)
Amounts reclassified from accumulated other comprehensive loss	6		134
Period change	(8,836)	(472)	(25,300)	(1,591)
Balance	$ (28,034)	$ (598)	$ (28,034)	$ (598)