Loans - Amortized Cost Basis of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 2,851	$ 445	$ 5,023	$ 14,638
Financing receivable	3,863,456		3,863,456		$ 3,987,041
Non-accrual loans	2,500		2,500
Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	445	1,730	569
Payment Delay and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0		442
Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount		0		$ 12,500
Loan modification term				90 days
Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0	0	$ 386
Payment Delay, Term Extension, and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	2,851	0	2,851	1,183
Risk Rated Substandard
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount				12,500
Payment Delay, Term Extension, and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable					$ 10,000
Non-accrual loans	2,500		2,500
Commercial and industrial loans
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 2,851	$ 445	$ 3,293	$ 13,957
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percentage	1.76%	0.26%	2.03%	8.00%
Loan modification term	36 months		36 months	7 months 7 days
Commercial and industrial loans | Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 0	$ 445	$ 0	$ 569
Commercial and industrial loans | Payment Delay and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0		442
Commercial and industrial loans | Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount		0		12,500
Commercial and industrial loans | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0	0	0
Commercial and industrial loans | Payment Delay, Term Extension, and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 2,851	$ 0	2,851	888
Commercial mortgage
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount			$ 1,730	$ 681
Financing receivable, excluding accrued interest, modified in period, to total financing receivables, percentage			0.19%	0.08%
Loan modification term				60 months
Commercial mortgage | Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount			$ 1,730	$ 0
Commercial mortgage | Payment Delay and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount			0
Commercial mortgage | Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount				0
Commercial mortgage | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount			0	386
Commercial mortgage | Payment Delay, Term Extension, and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount			$ 0	$ 295