Accumulated Other Comprehensive Loss (Schedule of accumulated other comprehensive loss activity) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 125,969	$ 116,499
Balance	$ 117,293	$ 118,856
Income tax rate	21.00%	21.00%
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (6,635)	$ (3,791)
Other comprehensive loss before reclassifications	(10,939)	(1,240)
Amounts reclassified from accumulated other comprehensive loss		71
Period change	(10,939)	(1,169)
Balance	(17,574)	(4,960)
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,901)	(4,784)
Other comprehensive loss before reclassifications		(70)
Amounts reclassified from accumulated other comprehensive loss		71
Period change		1
Balance	(3,901)	(4,783)
Unrealized (losses) gains on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,734)	993
Other comprehensive loss before reclassifications	(10,939)	(1,170)
Period change	(10,939)	(1,170)
Balance	$ (13,673)	$ (177)