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Servicing Assets - SBA Loans (Details) - SBA Loan Servicing Rights - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Servicing Assets at Fair Value [Line Items]    
Loans serviced $ 18,000 $ 0
Servicing fee income 25  
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Servicing rights capitalized 383  
Amortization of servicing rights (20)  
Change in valuation allowance (26)  
Balance at end of the period 337  
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]    
Impairment (26)  
Valuation allowance, end of the period $ (26)