Loans and the Allowance for Credit Losses - Summary of Details of Portfolio Loans Modified by Loan Category (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Financing Receivable, Modified [Line Items]
Modifications loans	$ 54,153,000	$ 63,848,000	$ 83,013,000	$ 113,695,000
Percentage of total by loan category	0.30%	0.30%	0.40%	0.60%
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	$ 54,075,000	$ 60,721,000	$ 82,737,000	$ 105,292,000
Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	78,000		245,000	9,000
Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		3,127,000	31,000	8,152,000
Term Extension and Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Modifications loans				242,000
Home Equity [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 761,000		$ 1,474,000
Percentage of total by loan category		0.10%		0.10%
Home Equity [Member] \| Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 761,000		$ 1,474,000
Residential Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	78,000	1,939,000	276,000	$ 4,390,000
Percentage of total by loan category				0.10%
Residential Real Estate [Member] \| Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	$ 78,000		245,000
Residential Real Estate [Member] \| Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		1,939,000	31,000	$ 4,390,000
Consumer [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 427,000		$ 806,000
Percentage of total by loan category		0.10%		0.20%
Consumer [Member] \| Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 427,000		$ 806,000
Commercial Real Estate - Land and Construction [Member] \| Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 29,675,000		$ 53,895,000
Percentage of total by loan category	0.30%	1.60%		3.00%
Commercial Real Estate - Land and Construction [Member] \| Commercial Real Estate [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modifications loans		$ 29,675,000		$ 53,895,000
Commercial Real Estate - Improved Property [Member] \| Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	$ 31,604,000	$ 30,601,000	$ 53,924,000	$ 48,199,000
Percentage of total by loan category		0.30%	0.60%	0.50%
Commercial Real Estate - Improved Property [Member] \| Commercial Real Estate [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	31,604,000	$ 30,601,000	$ 53,924,000	$ 46,484,000
Commercial Real Estate - Improved Property [Member] \| Commercial Real Estate [Member] \| Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans				1,473,000
Commercial Real Estate - Improved Property [Member] \| Commercial Real Estate [Member] \| Term Extension and Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Modifications loans				242,000
Commercial and Industrial [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	$ 22,471,000	445,000	$ 28,813,000	$ 4,931,000
Percentage of total by loan category	0.70%		0.90%	0.20%
Commercial and Industrial [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modifications loans	$ 22,471,000	$ 445,000	$ 28,813,000	$ 4,913,000
Commercial and Industrial [Member] \| Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Modifications loans				9,000
Commercial and Industrial [Member] \| Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modifications loans				9,000
Unfunded Loan Commitment [Member]
Financing Receivable, Modified [Line Items]
Modifications loans			$ 5,000	$ 1,700