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Loans and Allowance - Summary of Troubled Debt Restructurings (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
loan
Financing Receivable, Troubled Debt Restructuring [Line Items]  
Pre-Modification Recorded Balance $ 90
Post-Modification Recorded Balance $ 90
Number of Loans | loan 1
Residential  
Financing Receivable, Troubled Debt Restructuring [Line Items]  
Pre-Modification Recorded Balance $ 90
Post-Modification Recorded Balance $ 90
Number of Loans | loan 1