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Deposits - Narrative (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Deposits    
Time deposits with balances exceeded FDIC insurance limit of $250,000 $ 104,300,000 $ 104,900,000
Brokered deposits 45,200,000 39,800,000
Cash reserve deposit required as per Federal Reserve Bank 1,300,000 1,800,000
Average compensating balances $ 1,500,000 $ 787,000