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Loans and Allowance for Loan Losses - Troubled Debt Restructuring Modifications (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
loans
contract
Mar. 31, 2016
USD ($)
loans
contract
Receivables [Abstract]    
Number of Contracts Modified | contract 1 1
Pre-Modification Outstanding Recorded Investment $ 50 $ 1,549
Post-Modification Outstanding Recorded Investment 50 1,546
Post-Modification Outstanding Recorded Investment at Period End $ 50 $ 1,541
Number of modified TDR loans that defaulted | loans 0 0