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Servicing Assets - SBA Sensitivity Analysis (Details) - SBA Loan Servicing Rights
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]  
Fair value of SBA loan servicing rights $ 321
Weighted average life (years) 4 years 6 months
Prepayment speed 10.34%
Impact on fair value of a 10% adverse change in prepayment speed $ (11)
Impact on fair value of a 20% adverse change in prepayment speed $ (21)
Discount rate 8.88%
Impact on fair value of a 10% adverse change in the discount rate $ (9)
Impact on fair value of a 20% adverse change in the discount rate $ (18)