Loans - Summary of loans by credit quality indicator based on internally assigned credit grade (Details) - USD ($) $ in Thousands | 3 Months Ended | |
Mar. 31, 2023 | Dec. 31, 2022 |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | $ 966,922 | $ 948,553 |
Non-revolving loans internally assigned grade | 965,630 | |
Current period gross charge-offs | 54 | |
Federal Reserve Bank Advances | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Loans Pledged to FHLB | 16,700 | 20,600 |
Federal Reserve Bank of New York (FRB) | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Maximum borrowing capacity | 11,200 | 14,200 |
2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 44,105 | |
2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 180,350 | |
Current period gross charge-offs | 44 | |
2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 140,549 | |
Current period gross charge-offs | 10 | |
2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 37,892 | |
2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 36,922 | |
2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 84,679 | |
Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 436,688 | |
Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,445 | |
Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 934,101 |
Non-revolving loans internally assigned grade | 959,557 | |
Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 40,279 | |
Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 180,350 | |
Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 140,549 | |
Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 37,892 | |
Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 36,922 | |
Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 83,958 | |
Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 435,162 | |
Pass | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,445 | |
Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 13,731 |
Non-revolving loans internally assigned grade | 5,352 | |
Special Mention | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,826 | |
Special Mention | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,526 | |
Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 721 |
Non-revolving loans internally assigned grade | 721 | |
Substandard | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 721 | |
Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 387,879 | 379,891 |
Real Estate Loans Segment | Multifamily | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 274,656 | 262,489 |
Non-revolving loans internally assigned grade | 274,734 | |
Real Estate Loans Segment | Multifamily | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 16,757 | |
Real Estate Loans Segment | Multifamily | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 29,407 | |
Real Estate Loans Segment | Multifamily | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 111,509 | |
Real Estate Loans Segment | Multifamily | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 34,961 | |
Real Estate Loans Segment | Multifamily | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 23,803 | |
Real Estate Loans Segment | Multifamily | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 58,297 | |
Real Estate Loans Segment | Multifamily | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 258,413 |
Non-revolving loans internally assigned grade | 274,013 | |
Real Estate Loans Segment | Multifamily | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 16,757 | |
Real Estate Loans Segment | Multifamily | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 29,407 | |
Real Estate Loans Segment | Multifamily | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 111,509 | |
Real Estate Loans Segment | Multifamily | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 34,961 | |
Real Estate Loans Segment | Multifamily | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 23,803 | |
Real Estate Loans Segment | Multifamily | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 57,576 | |
Real Estate Loans Segment | Multifamily | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 3,355 |
Real Estate Loans Segment | Multifamily | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 721 |
Non-revolving loans internally assigned grade | 721 | |
Real Estate Loans Segment | Multifamily | Substandard | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 721 | |
Real Estate Loans Segment | Multifamily | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | Commercial real estate | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 91,493 | 91,837 |
Non-revolving loans internally assigned grade | 91,436 | |
Real Estate Loans Segment | Commercial real estate | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,826 | |
Real Estate Loans Segment | Commercial real estate | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 59,034 | |
Real Estate Loans Segment | Commercial real estate | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,737 | |
Real Estate Loans Segment | Commercial real estate | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,785 | |
Real Estate Loans Segment | Commercial real estate | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 5,763 | |
Real Estate Loans Segment | Commercial real estate | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,291 | |
Real Estate Loans Segment | Commercial real estate | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 88,019 |
Non-revolving loans internally assigned grade | 87,610 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 59,034 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,737 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,785 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 5,763 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,291 | |
Real Estate Loans Segment | Commercial real estate | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 3,818 |
Non-revolving loans internally assigned grade | 3,826 | |
Real Estate Loans Segment | Commercial real estate | Special Mention | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,826 | |
Real Estate Loans Segment | Commercial real estate | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | Commercial real estate | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | 1-4 family | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 21,730 | 25,565 |
Non-revolving loans internally assigned grade | 21,735 | |
Real Estate Loans Segment | 1-4 family | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,888 | |
Real Estate Loans Segment | 1-4 family | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,354 | |
Real Estate Loans Segment | 1-4 family | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 15,493 | |
Real Estate Loans Segment | 1-4 family | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 25,565 |
Non-revolving loans internally assigned grade | 21,735 | |
Real Estate Loans Segment | 1-4 family | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,888 | |
Real Estate Loans Segment | 1-4 family | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,354 | |
Real Estate Loans Segment | 1-4 family | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 15,493 | |
Real Estate Loans Segment | 1-4 family | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | 1-4 family | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | 1-4 family | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | Construction | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | Construction | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Real Estate Loans Segment | Construction | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Commercial Loans Segment | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 565,927 | 552,082 |
Non-revolving loans internally assigned grade | 564,441 | |
Commercial Loans Segment | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 22,396 | |
Commercial Loans Segment | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 80,459 | |
Commercial Loans Segment | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 17,828 | |
Commercial Loans Segment | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 688 | |
Commercial Loans Segment | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,760 | |
Commercial Loans Segment | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 546 | |
Commercial Loans Segment | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 436,319 | |
Commercial Loans Segment | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,445 | |
Commercial Loans Segment | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 547,412 |
Non-revolving loans internally assigned grade | 562,915 | |
Commercial Loans Segment | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 22,396 | |
Commercial Loans Segment | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 80,459 | |
Commercial Loans Segment | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 17,828 | |
Commercial Loans Segment | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 688 | |
Commercial Loans Segment | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,760 | |
Commercial Loans Segment | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 546 | |
Commercial Loans Segment | Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 434,793 | |
Commercial Loans Segment | Pass | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,445 | |
Commercial Loans Segment | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 4,670 |
Non-revolving loans internally assigned grade | 1,526 | |
Commercial Loans Segment | Special Mention | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,526 | |
Commercial Loans Segment | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Commercial Loans Segment | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Consumer Loans Segment | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 13,116 | 16,580 |
Non-revolving loans internally assigned grade | 13,284 | |
Current period gross charge-offs | 54 | |
Consumer Loans Segment | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,126 | |
Consumer Loans Segment | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 9,562 | |
Current period gross charge-offs | 44 | |
Consumer Loans Segment | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 475 | |
Current period gross charge-offs | 10 | |
Consumer Loans Segment | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 458 | |
Consumer Loans Segment | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,242 | |
Consumer Loans Segment | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 52 | |
Consumer Loans Segment | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 369 | |
Consumer Loans Segment | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 14,692 |
Non-revolving loans internally assigned grade | 13,284 | |
Consumer Loans Segment | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,126 | |
Consumer Loans Segment | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 9,562 | |
Consumer Loans Segment | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 475 | |
Consumer Loans Segment | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 458 | |
Consumer Loans Segment | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,242 | |
Consumer Loans Segment | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 52 | |
Consumer Loans Segment | Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | $ 369 | |
Consumer Loans Segment | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 1,888 |
Consumer Loans Segment | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Consumer Loans Segment | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | $ 0 |