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Employee Stock Ownership Plan (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Employee Stock Ownership Plan    
Employee Stock Ownership Plan (ESOP), number of committed-to-be-released shares 7,647 3,801
Average fair value of per share $ 10.15 $ 10.66
Employee Stock Ownership Plan (ESOP), Compensation expense $ 61 $ 35