Accumulated Other Comprehensive Income (Schedule of Changes in AOCI by Components) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Beginning balance	$ 76,902	$ 72,526	$ 73,707	$ 67,378	$ 67,378
Net current period other comprehensive income (loss)	271	1,192	3,311	5,190
Reclassification for ASU	44,845		44,845		43,954
Ending balance	76,701	73,786	76,701	73,786	73,707
Accumulated Other Comprehensive Loss [Member]
Beginning balance	3,556	(384)	516	(4,299)	(4,299)
Other comprehensive income (loss) before reclassification			3,996		3,763
Amounts reclassified from accumulated other comprehensive income			(685)		1,135
Net current period other comprehensive income (loss)	271	1,192	3,311	5,190	4,898
Ending balance	3,827	808	3,827	808	516
Gains and Losses on Cash Flow Hedges [Member]
Beginning balance			0	0	0
Other comprehensive income (loss) before reclassification			(137)		0
Amounts reclassified from accumulated other comprehensive income			(17)		0
Net current period other comprehensive income (loss)			(154)		0
Ending balance	(154)		(154)		0
Unrealized Gains and Losses on Available for sale Securities [Member]
Beginning balance			516	(2,647)	(2,647)
Other comprehensive income (loss) before reclassification			4,133		3,129
Amounts reclassified from accumulated other comprehensive income			(668)		34
Net current period other comprehensive income (loss)			3,465		3,163
Ending balance	3,981		3,981		516
Defined Benefit Pension Items [Member]
Beginning balance			0	(1,652)	(1,652)
Other comprehensive income (loss) before reclassification			0		634
Amounts reclassified from accumulated other comprehensive income			0		1,101
Net current period other comprehensive income (loss)			0		1,735
Ending balance	$ 0		$ 0		0
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Accumulated Other Comprehensive Loss [Member]
Reclassification for ASU		$ (83)		$ (83)
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | ASU 2018-02 [Member] | Accumulated Other Comprehensive Loss [Member]
Reclassification for ASU					(83)
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | ASU 2018-02 [Member] | Gains and Losses on Cash Flow Hedges [Member]
Reclassification for ASU					0
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | ASU 2018-02 [Member] | Unrealized Gains and Losses on Available for sale Securities [Member]
Reclassification for ASU					0
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | ASU 2018-02 [Member] | Defined Benefit Pension Items [Member]
Reclassification for ASU					$ (83)