Income Taxes - Reconciliation of effective tax rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal income tax, at statutory rate	21.00%	21.00%	21.00%
State taxes, net of federal tax benefit (1)	7.90%	7.80%	8.00%
Tax exempt investment security income, net	(0.90%)	(4.00%)	(3.50%)
Bank owned life insurance, net	(0.60%)	(2.40%)	(0.60%)
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent	0.00%	0.00%	0.00%
Compensation - stock compensation	(0.10%)	(0.60%)	0.00%
Low income housing tax credits	(3.60%)	(15.60%)	(2.50%)
Nondeductible employee compensation	0.00%	1.00%	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent	0.40%	1.70%	(0.20%)
Nondeductible acquisition‑related expense	0.00%	3.80%	0.00%
Other	0.40%	4.20%	0.00%
Total provision for income taxes	27.30%	30.30%	24.50%
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 11,031	$ 2,310	$ 7,106
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	4,147	860	2,714
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(1,912)	(1,720)	(847)
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount	0	0	0
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	(461)	(438)	(1,176)
Effective Income Tax Rate Reconciliation, Bank-Owned Life Insurance, Amount	(322)	(272)	(214)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount	(48)	(72)	(13)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Employee Compensation, Amount	0	113	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Acquisitions, Amount	0	416	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount	$ 239	$ 194	$ (64)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amortization, Percent	3.60%	17.90%	3.10%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amortization, Amount	$ 1,899	$ 1,976	$ 1,055
Effective Income Tax Rate Reconciliation, Other Adjustments for Tax Benefits, Percent	(0.80%)	(4.50%)	(0.80%)
Effective Income Tax Rate Reconciliation, Other Adjustments for Tax Benefits, Amount	$ (399)	$ (496)	$ (257)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	186	461	0
Provision for income taxes	$ 14,360	$ 3,332	$ 8,304
Tax Jurisdiction of Domicile [Extensible Enumeration]	UNITED STATES	UNITED STATES	UNITED STATES