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Liberty Bell Transaction - Core Deposit Intangible (Details) - Core deposit intangible - USD ($)
3 Months Ended 9 Months Ended
Mar. 01, 2018
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Fair value of the core deposit intangible        
Core deposit intangible value $ 1,490,000      
Core deposit intangible (as a percent) 2.04%      
Core deposit intangible, amortization period 7 years      
Acquisition related costs   $ 135,000 $ 0 $ 1,300,000