Loan Servicing - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Loan Sales And Mortgage Servicing Rights [Line Items]
Servicing assets	$ 16,826		$ 17,083
Servicing fees net of servicing asset amortization	592	$ 840
Mortgage Loans
Loan Sales And Mortgage Servicing Rights [Line Items]
Servicing assets	13,200		15,100
SBA Loans
Loan Sales And Mortgage Servicing Rights [Line Items]
Servicing assets	$ 4,100		$ 5,600