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Employee Stock Ownership Plan (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Employee Stock Ownership Plan    
Employee Stock Ownership Plan (ESOP), number of committed-to-be-released shares 12,960 12,960
Average fair value of per share $ 10.62 $ 11.03
Employee Stock Ownership Plan (ESOP), Compensation expense $ 138 $ 143