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Fair Value of Financial Instruments - Fair Value Roll Forward (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Interest Rate Lock Commitments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 910 $ 389
Additions 0  
Included in net income 1,154 392
Ending balance 2,064 781
Servicing asset    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 2,481 0
Additions 113  
Included in net income (179) 0
Ending balance $ 2,415 $ 0