Accumulated Other Comprehensive Loss (Schedule of accumulated other comprehensive loss activity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		15 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 117,293	$ 118,856	$ 125,969	$ 116,499	$ 118,856
Balance	113,341	121,862	$ 113,341	$ 121,862	$ 113,341
Income tax rate			21.00%	21.00%	21.00%
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(17,574)	(4,960)	$ (6,635)	$ (3,791)	$ (4,960)
Other comprehensive loss before reclassifications	(6,421)	159	(17,360)	(1,082)
Amounts reclassified from accumulated other comprehensive loss	234	70	234	142
Period change	(6,187)	229	(17,126)	(940)
Balance	(23,761)	(4,731)	(23,761)	(4,731)	(23,761)
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,901)	(4,783)	(3,901)	(4,784)	(4,783)
Other comprehensive loss before reclassifications	(768)	108	(768)	37
Amounts reclassified from accumulated other comprehensive loss	106	70	106	142
Period change	(662)	178	(662)	179
Balance	(4,563)	(4,605)	(4,563)	(4,605)	(4,563)
Unrealized (losses) gains on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(13,673)	(177)	(2,734)	993	(177)
Other comprehensive loss before reclassifications	(5,653)	51	(16,592)	(1,119)
Amounts reclassified from accumulated other comprehensive loss	128		128
Period change	(5,525)	51	(16,464)	(1,119)
Balance	$ (19,198)	$ (126)	$ (19,198)	$ (126)	$ (19,198)