Mortgage Banking and Derivatives (Details)
Sep. 30, 2020
USD ($)
position
Dec. 31, 2019
USD ($)
Participating Mortgage Loans [Line Items]    
Fair value of LHFS $ 27,525,000 $ 12,722,000
Unpaid principal balance 27,600,000  
Other Assets    
Participating Mortgage Loans [Line Items]    
Fair value of forward sales commitments 64,000  
Forward sales commitments notional amount $ 80,800,000  
Forward sales commitments total positions | position 324  
Other Liabilities    
Participating Mortgage Loans [Line Items]    
Fair value of IRLC $ 40,000  
IRLC notional amount $ 53,300,000  
IRLC total positions | position 215