Loans and Asset Quality - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan origination fees	$ 1,600,000	$ 3,100,000
Increase for allowance for loan losses	19,176,000	17,951,000	$ 13,937,000
Loans charge-off	0	0
TDRs that subsequently defaulted	0	0
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Other commitments	357,900,000	283,300,000
Standby Letters of Credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Other commitments	12,500,000	10,500,000
Paycheck Protection Program Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Deferred PPP loan fees	626,000	2,800,000
TDRs
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase for allowance for loan losses	$ 14,000	$ 12,000

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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