Loans held for sale - Delinquent and Non-performing Loans Sold During the Period Indicated (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) loan	Mar. 31, 2025 USD ($) loan
Performing loans
Loans held for sale
Loans sold \| loan	1	17
Proceeds	$ 543	$ 44,466
Net gain	$ 51	$ 434
Performing loans \| Multi-family residential
Loans held for sale
Loans sold \| loan		12
Proceeds		$ 35,388
Performing loans \| Commercial
Loans held for sale
Loans sold \| loan		1
Proceeds		$ 3,274
Performing loans \| Small Business Administration
Loans held for sale
Loans sold \| loan	1	4
Proceeds	$ 543	$ 5,804
Net gain	$ 51	$ 434
Delinquent and non-performing loans
Loans held for sale
Loans sold \| loan	4	3
Proceeds	$ 5,631	$ 5,786
Net Charge-offs	(789)
Net gain	$ 43	$ 391
Delinquent and non-performing loans \| Multi-family residential
Loans held for sale
Loans sold \| loan	2	1
Proceeds	$ 1,083	$ 550
Net Charge-offs	(173)
Net gain	$ 43	$ 134
Delinquent and non-performing loans \| Commercial
Loans held for sale
Loans sold \| loan	1	1
Proceeds	$ 4,309	$ 5,099
Net Charge-offs	$ (616)
Net gain		$ 238
Delinquent and non-performing loans \| One-to-four family - mixed- use property
Loans held for sale
Loans sold \| loan	1	1
Proceeds	$ 239	$ 137
Net gain		$ 19