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Loans and Allowance for Credit Losses on Loans - Schedule of Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	$ 2,090,354		$ 2,083,256
Allowance for credit losses on loans	(29,853)	$ (29,854)	(30,656)	$ (30,675)	$ (30,675)	$ (25,172)
Loans, net of allowance for credit losses on loans	2,060,501		2,052,600
Financing receivable, unamortized loan fee	2,600		2,500
Unrecognized purchase discounts	1,000		1,100
Financing receivable, accrued interest, net	$ 6,600		$ 6,800
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest receivable and other assets		Interest receivable and other assets
Commercial Portfolio Segment | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	$ 154,303		$ 152,263
Allowance for credit losses on loans	(1,893)	(1,608)	(1,576)	(1,718)	(1,876)	(1,712)
Commercial real estate loans | Commercial owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	313,996		321,962
Allowance for credit losses on loans	(2,465)	(2,402)	(2,361)	(2,345)	(2,408)	(2,476)
Commercial real estate loans | Commercial non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	1,324,263		1,273,596
Allowance for credit losses on loans	(21,157)	(21,516)	(22,093)	(22,100)	(22,165)	(14,933)
Commercial real estate loans | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	15,869		36,970
Allowance for credit losses on loans	(229)	(384)	(638)	(660)	(874)	(1,832)
Residential Portfolio Segment | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	95,872		88,325
Allowance for credit losses on loans	(767)	(783)	(684)	(647)	(650)	(552)
Residential Portfolio Segment | Other residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	122,924		143,207
Allowance for credit losses on loans	(1,190)	(1,110)	(1,141)	(1,145)	(769)	(653)
Installment and other consumer loans | Installment and other consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, at amortized cost	63,127		66,933
Allowance for credit losses on loans	$ (981)	$ (871)	$ (908)	$ (920)	$ (910)	$ (976)

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Amount, after allowance for credit loss, of accrued interest on financing receivable.

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