Loans Receivable and Allowance for Credit Losses - Charge Offs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loans	$ 2,167	$ 1,478	$ 5,793	$ 4,741
Mortgage loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff	0	0	0	0
Year two, originated, fiscal year before current fiscal year, writeoff	0	0	201	0
Year three, originated, two years before current fiscal year, writeoff	0	0	0	0
Year four, originated, three years before current fiscal year, writeoff	0	0	0	358
Year five, originated, four years before current fiscal year, writeoff	0	0	0	0
Originated, more than five Years before current fiscal year, writeoff	486	1,044	720	1,575
Total Loans	486	1,044	921	1,933
Mortgage loans \| Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff		0	0	0
Year two, originated, fiscal year before current fiscal year, writeoff		0	0	0
Year three, originated, two years before current fiscal year, writeoff		0	0	0
Year four, originated, three years before current fiscal year, writeoff		0	0	358
Year five, originated, four years before current fiscal year, writeoff		0	0	0
Originated, more than five Years before current fiscal year, writeoff		977	234	1,508
Total Loans		977	234	1,866
Mortgage loans \| Multi-family
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff	0		0
Year two, originated, fiscal year before current fiscal year, writeoff	0		201
Year three, originated, two years before current fiscal year, writeoff	0		0
Year four, originated, three years before current fiscal year, writeoff	0		0
Year five, originated, four years before current fiscal year, writeoff	0		0
Originated, more than five Years before current fiscal year, writeoff	486		486
Total Loans	486		687
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff	0	0	0	0
Year two, originated, fiscal year before current fiscal year, writeoff	1,507	0	2,830	0
Year three, originated, two years before current fiscal year, writeoff	0	39	0	39
Year four, originated, three years before current fiscal year, writeoff	0	231	167	2,362
Year five, originated, four years before current fiscal year, writeoff	0	60	1,336	125
Originated, more than five Years before current fiscal year, writeoff	0	0	28	0
Total Loans	1,507	330	4,361	2,526
Consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff	2	6	11	18
Year two, originated, fiscal year before current fiscal year, writeoff	0	3	0	13
Year three, originated, two years before current fiscal year, writeoff	0	0	0	12
Year four, originated, three years before current fiscal year, writeoff	3	0	15	3
Year five, originated, four years before current fiscal year, writeoff	0	0	0	0
Originated, more than five Years before current fiscal year, writeoff	43	10	151	37
Total Loans	48	19	178	83
Total gross loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Year one, originated, current fiscal year, writeoff	2	6	11	18
Year two, originated, fiscal year before current fiscal year, writeoff	1,507	3	3,031	13
Year three, originated, two years before current fiscal year, writeoff	0	39	0	51
Year four, originated, three years before current fiscal year, writeoff	3	231	182	2,723
Year five, originated, four years before current fiscal year, writeoff	0	60	1,336	126
Originated, more than five Years before current fiscal year, writeoff	530	1,054	900	1,611
Total Loans	2,042	1,393	5,459	4,542
Consumer Overdraft Accounts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loans	174	104	511	282
Consumer Overdraft Accounts \| Consumer Loans, Overdraft Accounts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Loans	$ 126	$ 85	$ 333	$ 199

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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