Loans and Allowance for Credit Losses - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred origination fees	$ 8,600,000		$ 8,600,000
Accrued interest on loans	6,500,000		5,500,000
PPP loans	1,521,030,000		1,487,947,000
Nonaccrual loans	8,775,000		7,076,000
Interest on nonaccrual loans reversed through interest income	0	$ 2,000
Interest earned on nonaccrual loans	179,000	$ 57,000
Net of government guarantees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	6,083,000		6,430,000
Commercial & industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	5,820,000		3,294,000
Commercial & industrial loans | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
PPP loans	$ 4,200,000		$ 7,100,000