Loans and Allowance for Credit Losses on Loans - Aging of Past Due Loans by Class of Loans - Additional Information (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Aging of Past Due Loans by Class of Loans
Loans, net of deferred fees	$ 3,082,452,000	$ 3,087,326,000	$ 2,824,796,000
30 days or greater past due
Aging of Past Due Loans by Class of Loans
Nonaccrual loans	1,316,000	1,258,000
Less than 30 days past due
Aging of Past Due Loans by Class of Loans
Nonaccrual loans	418,000	2,202,000
Past due
Aging of Past Due Loans by Class of Loans
Loans, net of deferred fees	$ 10,224,000	$ 5,015,000