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Accumulated Other Comprehensive Income (Schedule of Changes in AOCI by Components) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Beginning balance $ 73,707 $ 67,378 $ 67,378
Net current period other comprehensive income 3,900 1,483  
Ending balance 77,366 69,173 73,707
Accumulated Other Comprehensive Loss [Member]      
Beginning balance 516 (4,299) (4,299)
Other comprehensive income before reclassification 3,909   3,763
Amounts reclassified from accumulated other comprehensive income (9)   1,135
Net current period other comprehensive income 3,900 1,483 4,898
Ending balance 4,416 (2,816) 516
Unrealized Gains and Losses on Available for sale Securities [Member]      
Beginning balance 516 (2,647) (2,647)
Other comprehensive income before reclassification 3,909   3,129
Amounts reclassified from accumulated other comprehensive income (9)   34
Net current period other comprehensive income 3,900   3,163
Ending balance $ 4,416   516
Defined Benefit Pension Items [Member]      
Beginning balance   $ (1,652) (1,652)
Other comprehensive income before reclassification     634
Amounts reclassified from accumulated other comprehensive income     1,101
Net current period other comprehensive income     1,735
ASU 2018-02 [Member] | Accumulated Other Comprehensive Loss [Member]      
Reclassification for ASU     (83)
ASU 2018-02 [Member] | Defined Benefit Pension Items [Member]      
Reclassification for ASU     $ (83)