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Loans Receivable and Allowance for Credit Losses - Schedule of Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance for credit losses	$ 7,779	$ 6,839	$ 6,729	$ 7,305
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, Individually evaluated loans	2,327	2,101
Allowance for credit losses, Collectively evaluated loans	5,452	4,738
Total allowance for credit losses	7,779	6,839
Loans receivable, gross, Individually evaluated loans	23,721	12,495
Loans receivable, gross, Collectively evaluated loans	735,271	580,067
Loans receivable, gross	758,992	592,562
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance for credit losses	2,602	2,340	2,275	2,241
Commercial Real Estate \| Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, Individually evaluated loans	205	0
Allowance for credit losses, Collectively evaluated loans	2,397	2,416
Total allowance for credit losses	2,602	2,416
Loans receivable, gross, Individually evaluated loans	13,131	7,240
Loans receivable, gross, Collectively evaluated loans	409,237	338,951
Loans receivable, gross	422,368	346,191
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance for credit losses	1,356	753	639	596
Residential Real Estate \| Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, Individually evaluated loans	0	0
Allowance for credit losses, Collectively evaluated loans	1,356	628
Total allowance for credit losses	1,356	628
Loans receivable, gross, Individually evaluated loans	345	57
Loans receivable, gross, Collectively evaluated loans	189,989	79,612
Loans receivable, gross	190,334	79,669
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance for credit losses	3,532	3,305	1,168	1,077
Commercial and Industrial \| Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, Individually evaluated loans	2,120	2,100
Allowance for credit losses, Collectively evaluated loans	1,412	1,303
Total allowance for credit losses	3,532	3,403
Loans receivable, gross, Individually evaluated loans	10,244	5,197
Loans receivable, gross, Collectively evaluated loans	127,010	141,628
Loans receivable, gross	137,254	146,825
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance for credit losses	289	441	$ 2,607	$ 3,386
Consumer and Other \| Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, Individually evaluated loans	1	1
Allowance for credit losses, Collectively evaluated loans	288	391
Total allowance for credit losses	289	392
Loans receivable, gross, Individually evaluated loans	1	1
Loans receivable, gross, Collectively evaluated loans	9,034	19,876
Loans receivable, gross	$ 9,035	$ 19,877