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Loans and Allowance for Loan Losses - Schedule of Loans by Class Modified as TDR for Which There Was Payment Default Within Twelve Months Following Modification (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Contract
Sep. 30, 2017
Contract
Sep. 30, 2016
USD ($)
Contract
Financing Receivable Modifications [Line Items]      
Number of contracts | Contract 0 0 1
Recorded investment | $     $ 124
Consumer      
Financing Receivable Modifications [Line Items]      
Number of contracts | Contract     1
Recorded investment | $     $ 124