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Regulatory & Capital Matters - Dividend Restrictions and Deferrals (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2020
Sep. 30, 2019
Dividend Restrictions and Deferrals        
Number of previous years retained profit considered for dividend payment     2 years  
Minimum capital requirements, minimum percentage required     2.50%  
Number of shares authorized       1,494,826
Number of share repurchased 145,932 312,723    
Repurchase price $ 6.97 $ 7.06 $ 6.97