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Loans and the Allowance for Loan Losses (Details) - Purchase credit impaired loans - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Financing Receivable, Impaired [Line Items]    
Total carrying amount $ 6,553 $ 2,509
Commercial Portfolio Segment [Member]    
Financing Receivable, Impaired [Line Items]    
Total carrying amount 5,452 2,509
Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Impaired [Line Items]    
Total carrying amount $ 1,101