Loans - Summary of loans by credit quality indicator based on internally assigned credit grade (Details) - USD ($) $ in Thousands | 6 Months Ended | |
Jun. 30, 2023 | Dec. 31, 2022 |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | $ 1,056,771 | $ 948,553 |
Non-revolving loans internally assigned grade | 1,055,782 | |
Current period gross charge-offs | 168 | |
Federal Reserve Bank Advances | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Loans Pledged to FHLB | 16,600 | 20,600 |
Federal Reserve Bank of New York (FRB) | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Maximum borrowing capacity | 11,900 | 14,200 |
2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 91,446 | |
2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 185,452 | |
Current period gross charge-offs | 141 | |
2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 138,407 | |
Current period gross charge-offs | 22 | |
2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 37,672 | |
2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 36,568 | |
2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 83,890 | |
Current period gross charge-offs | 5 | |
Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 479,137 | |
Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,210 | |
Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 934,101 |
Non-revolving loans internally assigned grade | 1,036,754 | |
Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 87,731 | |
Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 185,452 | |
Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 137,698 | |
Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 26,629 | |
Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 36,568 | |
Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 83,169 | |
Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 476,297 | |
Pass | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,210 | |
Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 13,731 |
Non-revolving loans internally assigned grade | 17,922 | |
Special Mention | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,715 | |
Special Mention | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 709 | |
Special Mention | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 11,043 | |
Special Mention | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 2,455 | |
Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 721 |
Non-revolving loans internally assigned grade | 1,106 | |
Substandard | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 721 | |
Substandard | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 385 | |
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 | 411,381 | 379,891 |
Real Estate Loans Segment | Multifamily | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | 298,718 | 262,489 |
Non-revolving loans internally assigned grade | 298,837 | |
Real Estate Loans Segment | Multifamily | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 42,338 | |
Real Estate Loans Segment | Multifamily | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 29,312 | |
Real Estate Loans Segment | Multifamily | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 110,987 | |
Real Estate Loans Segment | Multifamily | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 34,806 | |
Real Estate Loans Segment | Multifamily | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 23,681 | |
Real Estate Loans Segment | Multifamily | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 57,713 | |
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 | 287,073 | |
Real Estate Loans Segment | Multifamily | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 42,338 | |
Real Estate Loans Segment | Multifamily | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 29,312 | |
Real Estate Loans Segment | Multifamily | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 110,987 | |
Real Estate Loans Segment | Multifamily | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 23,763 | |
Real Estate Loans Segment | Multifamily | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 23,681 | |
Real Estate Loans Segment | Multifamily | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 56,992 | |
Real Estate Loans Segment | Multifamily | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 3,355 |
Non-revolving loans internally assigned grade | 11,043 | |
Real Estate Loans Segment | Multifamily | Special Mention | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 11,043 | |
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 | 91,057 | 91,837 |
Non-revolving loans internally assigned grade | 90,998 | |
Real Estate Loans Segment | Commercial real estate | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,715 | |
Real Estate Loans Segment | Commercial real estate | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 58,889 | |
Real Estate Loans Segment | Commercial real estate | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,679 | |
Real Estate Loans Segment | Commercial real estate | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,778 | |
Real Estate Loans Segment | Commercial real estate | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 5,726 | |
Real Estate Loans Segment | Commercial real estate | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,211 | |
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 | 87,283 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 58,889 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,679 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,778 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 5,726 | |
Real Estate Loans Segment | Commercial real estate | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 10,211 | |
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 | 3,715 | |
Real Estate Loans Segment | Commercial real estate | Special Mention | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,715 | |
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 | 21,606 | 25,565 |
Non-revolving loans internally assigned grade | 21,609 | |
Real Estate Loans Segment | 1-4 family | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,879 | |
Real Estate Loans Segment | 1-4 family | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,335 | |
Real Estate Loans Segment | 1-4 family | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 15,395 | |
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 | 21,609 | |
Real Estate Loans Segment | 1-4 family | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,879 | |
Real Estate Loans Segment | 1-4 family | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 4,335 | |
Real Estate Loans Segment | 1-4 family | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 15,395 | |
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 | 634,890 | 552,082 |
Non-revolving loans internally assigned grade | 633,662 | |
Current period gross charge-offs | 5 | |
Commercial Loans Segment | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 44,704 | |
Commercial Loans Segment | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 87,513 | |
Commercial Loans Segment | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 16,389 | |
Commercial Loans Segment | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 617 | |
Commercial Loans Segment | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,616 | |
Commercial Loans Segment | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 522 | |
Current period gross charge-offs | 5 | |
Commercial Loans Segment | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 479,091 | |
Commercial Loans Segment | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,210 | |
Commercial Loans Segment | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 547,412 |
Non-revolving loans internally assigned grade | 630,137 | |
Commercial Loans Segment | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 44,704 | |
Commercial Loans Segment | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 87,513 | |
Commercial Loans Segment | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 15,680 | |
Commercial Loans Segment | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 617 | |
Commercial Loans Segment | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,616 | |
Commercial Loans Segment | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 522 | |
Commercial Loans Segment | Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 476,275 | |
Commercial Loans Segment | Pass | Revolving-Term | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 3,210 | |
Commercial Loans Segment | Special Mention | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 4,670 |
Non-revolving loans internally assigned grade | 3,164 | |
Commercial Loans Segment | Special Mention | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 709 | |
Commercial Loans Segment | Special Mention | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 2,455 | |
Commercial Loans Segment | Substandard | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 0 |
Non-revolving loans internally assigned grade | 361 | |
Commercial Loans Segment | Substandard | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 361 | |
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 | 10,500 | 16,580 |
Non-revolving loans internally assigned grade | 10,676 | |
Current period gross charge-offs | 163 | |
Consumer Loans Segment | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 689 | |
Consumer Loans Segment | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 7,859 | |
Current period gross charge-offs | 141 | |
Consumer Loans Segment | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 352 | |
Current period gross charge-offs | 22 | |
Consumer Loans Segment | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 471 | |
Consumer Loans Segment | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,210 | |
Consumer Loans Segment | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 49 | |
Consumer Loans Segment | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 46 | |
Consumer Loans Segment | Pass | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | 14,692 |
Non-revolving loans internally assigned grade | 10,652 | |
Consumer Loans Segment | Pass | 2023 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 689 | |
Consumer Loans Segment | Pass | 2022 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 7,859 | |
Consumer Loans Segment | Pass | 2021 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 352 | |
Consumer Loans Segment | Pass | 2020 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 471 | |
Consumer Loans Segment | Pass | 2019 | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 1,210 | |
Consumer Loans Segment | Pass | 2018 and Prior | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 49 | |
Consumer Loans Segment | Pass | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | 22 | |
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 |
Non-revolving loans internally assigned grade | 24 | |
Consumer Loans Segment | Substandard | Revolving | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Non-revolving loans internally assigned grade | $ 24 | |
Consumer Loans Segment | Doubtful | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Total loans held for investment | | $ 0 |