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Loans and Allowance for Credit Losses (Details 8) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Receivables [Abstract]    
Balance at January 1, $ (2,459) $ (4,444)
Accretion 964 1,985
Balance at December 31, $ (1,495) $ (2,459)