Loans and Allowance for Loan and Lease Losses - Loans on Nonaccrual Status by Portfolio Type (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Nonaccrual Status
Nonaccrual loans:	$ 16,780	$ 15,682
Commercial loans
Financing Receivable Recorded Investment Nonaccrual Status
Nonaccrual loans:	10,216	9,101
Commercial real estate loans – owner occupied
Financing Receivable Recorded Investment Nonaccrual Status
Nonaccrual loans:	6,303	6,507
Consumer loans
Financing Receivable Recorded Investment Nonaccrual Status
Nonaccrual loans:	$ 261	$ 74