v3.25.1
Loans - Summary of loans by credit quality indicator based on internally assigned credit grade (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade $ 1,415,858 $ 1,397,021
Current period gross charge-offs 3,037 390
FHLB of New York | Federal Home Loan Bank Advances    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans Pledged to FHLB 304,000 297,800
Maximum borrowing capacity 202,500 199,400
2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 44,917  
2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 75,757 90,070
2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 140,645 153,008
Current period gross charge-offs   38
2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 103,643 105,858
Current period gross charge-offs 18 352
2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 118,935 119,992
2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   36,185
Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 110,603  
Current period gross charge-offs 3,019  
2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   82,271
Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 818,169 806,397
Revolving-Term    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,189 3,240
Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,403,872 1,382,094
Pass | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 44,917  
Pass | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 75,757 90,070
Pass | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 140,645 153,008
Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 103,643 105,858
Pass | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 118,935 119,992
Pass | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   25,245
Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 102,603  
Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   82,271
Pass | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 814,183 802,410
Pass | Revolving-Term    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,189 3,240
Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,986 3,987
Special Mention | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,986 3,987
Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 8,000 10,940
Substandard | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   10,940
Substandard | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 8,000  
Real Estate | Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 365,000 355,326
Current period gross charge-offs 2,940  
Real Estate | Multifamily | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 14,557  
Real Estate | Multifamily | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 26,575 26,687
Real Estate | Multifamily | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 104,906 104,953
Real Estate | Multifamily | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 26,511 26,657
Real Estate | Multifamily | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 106,853 107,510
Real Estate | Multifamily | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   33,936
Real Estate | Multifamily | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 85,598  
Current period gross charge-offs 2,940  
Real Estate | Multifamily | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   55,583
Real Estate | Multifamily | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 357,000 344,386
Real Estate | Multifamily | Pass | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 14,557  
Real Estate | Multifamily | Pass | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 26,575 26,687
Real Estate | Multifamily | Pass | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 104,906 104,953
Real Estate | Multifamily | Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 26,511 26,657
Real Estate | Multifamily | Pass | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 106,853 107,510
Real Estate | Multifamily | Pass | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   22,996
Real Estate | Multifamily | Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 77,598  
Real Estate | Multifamily | Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   55,583
Real Estate | Multifamily | Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 8,000 10,940
Real Estate | Multifamily | Substandard | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   10,940
Real Estate | Multifamily | Substandard | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 8,000  
Real Estate | Commercial Real Estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 86,760 86,994
Real Estate | Commercial Real Estate | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 340  
Real Estate | Commercial Real Estate | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,826 1,834
Real Estate | Commercial Real Estate | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 2,940 3,040
Real Estate | Commercial Real Estate | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 57,349 57,620
Real Estate | Commercial Real Estate | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 10,251 10,315
Real Estate | Commercial Real Estate | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   1,714
Real Estate | Commercial Real Estate | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 14,054  
Real Estate | Commercial Real Estate | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   12,471
Real Estate | Commercial Real Estate | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 86,760 86,994
Real Estate | Commercial Real Estate | Pass | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 340  
Real Estate | Commercial Real Estate | Pass | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,826 1,834
Real Estate | Commercial Real Estate | Pass | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 2,940 3,040
Real Estate | Commercial Real Estate | Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 57,349 57,620
Real Estate | Commercial Real Estate | Pass | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 10,251 10,315
Real Estate | Commercial Real Estate | Pass | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   1,714
Real Estate | Commercial Real Estate | Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 14,054  
Real Estate | Commercial Real Estate | Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   12,471
Real Estate | 1-4 Family    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 10,978 14,669
Current period gross charge-offs 79  
Real Estate | 1-4 Family | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,813 1,823
Real Estate | 1-4 Family | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 9,165  
Current period gross charge-offs 79  
Real Estate | 1-4 Family | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   12,846
Real Estate | 1-4 Family | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 10,978 14,669
Real Estate | 1-4 Family | Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,813 1,823
Real Estate | 1-4 Family | Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 9,165  
Real Estate | 1-4 Family | Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   12,846
Commercial    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 934,409 920,684
Commercial | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 29,566  
Commercial | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 45,499 59,298
Commercial | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 29,289 41,051
Commercial | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 16,212 17,473
Commercial | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,831 2,167
Commercial | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   239
Commercial | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 536  
Commercial | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   378
Commercial | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 808,287 796,838
Commercial | Revolving-Term    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,189 3,240
Commercial | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 930,423 916,697
Commercial | Pass | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 29,566  
Commercial | Pass | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 45,499 59,298
Commercial | Pass | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 29,289 41,051
Commercial | Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 16,212 17,473
Commercial | Pass | 2021    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,831 2,167
Commercial | Pass | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   239
Commercial | Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 536  
Commercial | Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   378
Commercial | Pass | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 804,301 792,851
Commercial | Pass | Revolving-Term    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,189 3,240
Commercial | Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,986 3,987
Commercial | Special Mention | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,986 3,987
Consumer    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 18,711 19,348
Current period gross charge-offs 18 390
Consumer | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 454  
Consumer | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,857 2,251
Consumer | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,510 3,964
Current period gross charge-offs   38
Consumer | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,758 2,285
Current period gross charge-offs 18 352
Consumer | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   296
Consumer | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,250  
Consumer | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   993
Consumer | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 9,882 9,559
Consumer | Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 18,711 19,348
Consumer | Pass | 2025    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 454  
Consumer | Pass | 2024    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,857 2,251
Consumer | Pass | 2023    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 3,510 3,964
Consumer | Pass | 2022    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,758 2,285
Consumer | Pass | 2020    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   296
Consumer | Pass | Period 2020 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade 1,250  
Consumer | Pass | 2019 and Prior    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade   993
Consumer | Pass | Revolving    
Financing Receivable, Credit Quality Indicator [Line Items]    
Non-revolving loans internally assigned grade $ 9,882 $ 9,559