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Loans and Allowance for Credit Losses - Risk Category of Mortgage and Non-mortgage Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
2024/2023 | $ 530,766 | $ 668,603 |
2023/2022 | 671,546 | 1,164,733 |
2022/2021 | 1,021,841 | 706,194 |
2021/2020 | 647,745 | 556,884 |
2020/2019 | 501,483 | 727,117 |
Prior | 3,097,915 | 2,753,051 |
Revolving Loans Amortized Cost Basis | 266,070 | 319,483 |
Revolving Loans converted to term loans | 10,507 | 11,834 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 6,747,873 | 6,907,899 |
Gross charge-offs |  |  |
2024/2023 |  | 40 |
2022/2021 |  | 1,675 |
2021/2020 | 4,121 |  |
2020/2019 |  | 28 |
Prior | 765 | 147 |
Revolving Loans Amortized Cost Basis | 3,083 | 9,267 |
Total | 7,969 | 11,157 | $ 3,348
Basis adjustments | 2,025 | 949 |
Portfolio Layer Hedges on Closed Portfolio of Loans [Member] | Designated as Hedging Instrument [Member] |  |  |
Gross charge-offs |  |  |
Basis adjustments | 2,000 | 900 |
Pass |  |  |
2024/2023 | 521,213 | 643,427 |
2023/2022 | 663,189 | 1,150,854 |
2022/2021 | 998,274 | 694,182 |
2021/2020 | 639,443 | 552,523 |
2020/2019 | 480,812 | 685,238 |
Prior | 2,953,212 | 2,585,019 |
Revolving Loans Amortized Cost Basis | 260,031 | 303,521 |
Revolving Loans converted to term loans | 8,588 | 10,067 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 6,524,762 | 6,624,831 |
Watch |  |  |
2024/2023 | 8,837 | 10,072 |
2023/2022 | 4,850 | 11,480 |
2022/2021 | 8,513 | 6,227 |
2021/2020 | 5,907 | 4,361 |
2020/2019 | 17,415 | 26,149 |
Prior | 100,781 | 136,956 |
Revolving Loans Amortized Cost Basis | 1,613 | 8,582 |
Revolving Loans converted to term loans | 1,265 | 1,130 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 149,181 | 204,957 |
Special Mention |  |  |
2023/2022 | 2,616 |  |
2022/2021 | 10,163 |  |
2020/2019 | 445 | 15,637 |
Prior | 19,258 | 4,206 |
Revolving Loans Amortized Cost Basis |  | 495 |
Revolving Loans converted to term loans | 215 | 169 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 32,697 | 20,507 |
Substandard |  |  |
2024/2023 | 716 | 14,642 |
2023/2022 | 429 | 2,399 |
2022/2021 | 4,891 | 5,785 |
2021/2020 | 2,395 |  |
2020/2019 | 2,811 | 93 |
Prior | 24,664 | 26,870 |
Revolving Loans Amortized Cost Basis | 3,856 | 2,982 |
Revolving Loans converted to term loans | 439 | 468 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 40,201 | 53,239 |
Doubtful |  |  |
2024/2023 |  | 462 |
2023/2022 | 462 |  |
Revolving Loans Amortized Cost Basis | 570 | 3,903 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,032 | 4,365 |
Multi-family Residential Portfolio Segment [Member] |  |  |
2024/2023 | 116,814 | 254,340 |
2023/2022 | 248,004 | 465,939 |
2022/2021 | 392,834 | 277,203 |
2021/2020 | 273,451 | 217,496 |
2020/2019 | 201,074 | 300,822 |
Prior | 1,294,067 | 1,141,217 |
Revolving Loans Amortized Cost Basis | 5,369 | 5,209 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 2,531,613 | 2,662,226 |
Gross charge-offs |  |  |
Total |  |  | 208
Multi-family Residential Portfolio Segment [Member] | Pass |  |  |
2024/2023 | 116,814 | 254,340 |
2023/2022 | 248,004 | 465,069 |
2022/2021 | 375,084 | 276,483 |
2021/2020 | 272,747 | 215,561 |
2020/2019 | 195,539 | 300,822 |
Prior | 1,250,368 | 1,099,271 |
Revolving Loans Amortized Cost Basis | 5,369 | 5,209 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 2,463,925 | 2,616,755 |
Multi-family Residential Portfolio Segment [Member] | Watch |  |  |
2023/2022 |  | 870 |
2022/2021 | 7,587 | 720 |
2021/2020 |  | 1,935 |
2020/2019 | 2,724 |  |
Prior | 31,665 | 34,899 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 41,976 | 38,424 |
Multi-family Residential Portfolio Segment [Member] | Special Mention |  |  |
2022/2021 | 10,163 |  |
Prior | 2,388 | 1,193 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 12,551 | 1,193 |
Multi-family Residential Portfolio Segment [Member] | Substandard |  |  |
2021/2020 | 704 |  |
2020/2019 | 2,811 |  |
Prior | 9,646 | 5,854 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 13,161 | 5,854 |
Commercial Real Estate |  |  |
2024/2023 | 199,396 | 199,420 |
2023/2022 | 197,228 | 322,446 |
2022/2021 | 311,155 | 176,460 |
2021/2020 | 148,592 | 147,871 |
2020/2019 | 129,236 | 226,203 |
Prior | 989,015 | 887,224 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,974,622 | 1,959,624 |
Gross charge-offs |  |  |
Prior | 421 | 8 |
Total | 421 | 8 |
Commercial Real Estate | Pass |  |  |
2024/2023 | 199,396 | 199,420 |
2023/2022 | 197,228 | 322,446 |
2022/2021 | 310,725 | 175,045 |
2021/2020 | 144,569 | 147,871 |
2020/2019 | 122,576 | 216,964 |
Prior | 924,520 | 862,641 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,899,014 | 1,924,387 |
Commercial Real Estate | Watch |  |  |
2022/2021 | 430 | 1,415 |
2021/2020 | 4,023 |  |
2020/2019 | 6,660 | 9,239 |
Prior | 58,119 | 23,484 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 69,232 | 34,138 |
Commercial Real Estate | Special Mention |  |  |
Prior |  | 1,099 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments |  | 1,099 |
Commercial Real Estate | Substandard |  |  |
Prior | 6,376 |  |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 6,376 |  |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] |  |  |
2024/2023 | 17,759 | 22,852 |
2023/2022 | 23,552 | 43,579 |
2022/2021 | 45,487 | 41,604 |
2021/2020 | 40,515 | 30,984 |
2020/2019 | 27,893 | 61,261 |
Prior | 358,732 | 332,804 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 513,938 | 533,084 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Pass |  |  |
2024/2023 | 17,759 | 22,852 |
2023/2022 | 23,552 | 43,579 |
2022/2021 | 45,487 | 41,604 |
2021/2020 | 40,515 | 30,984 |
2020/2019 | 27,448 | 60,308 |
Prior | 352,004 | 326,246 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 506,765 | 525,573 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Watch |  |  |
2020/2019 |  | 233 |
Prior | 5,338 | 4,777 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 5,338 | 5,010 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Special Mention |  |  |
2020/2019 | 445 | 720 |
Prior | 1,273 | 564 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,718 | 1,284 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Substandard |  |  |
Prior | 117 | 1,217 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 117 | 1,217 |
One-To-Four Family - Residential Portfolio Segment [Member] |  |  |
2024/2023 | 2,136 | 6,289 |
2023/2022 | 53,556 | 23,704 |
2022/2021 | 22,878 | 8,721 |
2021/2020 | 7,371 | 16,482 |
2020/2019 | 16,039 | 38,340 |
Prior | 125,737 | 108,725 |
Revolving Loans Amortized Cost Basis | 6,369 | 7,424 |
Revolving Loans converted to term loans | 10,507 | 11,834 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 244,593 | 221,519 |
Gross charge-offs |  |  |
Prior | 14 | 23 |
Total | 14 | 23 | 20
One-To-Four Family - Residential Portfolio Segment [Member] | Pass |  |  |
2024/2023 | 2,136 | 6,289 |
2023/2022 | 53,556 | 23,197 |
2022/2021 | 22,382 | 8,451 |
2021/2020 | 7,117 | 16,482 |
2020/2019 | 16,039 | 36,779 |
Prior | 121,653 | 102,293 |
Revolving Loans Amortized Cost Basis | 6,256 | 7,424 |
Revolving Loans converted to term loans | 8,588 | 10,067 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 237,727 | 210,982 |
One-To-Four Family - Residential Portfolio Segment [Member] | Watch |  |  |
2023/2022 |  | 507 |
2022/2021 | 496 | 270 |
2021/2020 | 254 |  |
2020/2019 |  | 1,561 |
Prior | 2,769 | 695 |
Revolving Loans Amortized Cost Basis | 113 |  |
Revolving Loans converted to term loans | 1,265 | 1,130 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 4,897 | 4,163 |
One-To-Four Family - Residential Portfolio Segment [Member] | Special Mention |  |  |
Prior | 838 |  |
Revolving Loans converted to term loans | 215 | 169 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,053 | 169 |
One-To-Four Family - Residential Portfolio Segment [Member] | Substandard |  |  |
Prior | 477 | 5,737 |
Revolving Loans converted to term loans | 439 | 468 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 916 | 6,205 |
Construction Portfolio Segment |  |  |
2024/2023 |  | 5,809 |
2023/2022 | 2,667 | 3 |
2022/2021 | 2 | 5,793 |
2021/2020 | 18,215 |  |
Revolving Loans Amortized Cost Basis | 39,230 | 46,656 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 60,114 | 58,261 |
Construction Portfolio Segment | Pass |  |  |
2024/2023 |  | 5,809 |
2023/2022 | 51 | 3 |
2022/2021 | 2 | 5,793 |
2021/2020 | 18,215 |  |
Revolving Loans Amortized Cost Basis | 39,230 | 46,656 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 57,498 | 58,261 |
Construction Portfolio Segment | Special Mention |  |  |
2023/2022 | 2,616 |  |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 2,616 |  |
Small Business Administration Portfolio Segment [Member] |  |  |
2024/2023 | 7,356 | 1,984 |
2023/2022 | 1,906 | 3,283 |
2022/2021 | 3,211 | 4,510 |
2021/2020 | 2,783 | 3,443 |
2020/2019 | 1,672 | 653 |
Prior | 3,267 | 6,472 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 20,195 | 20,345 |
Gross charge-offs |  |  |
Prior | 7 | 7 |
Total | 7 | 7 | $ 1,053
Small Business Administration Portfolio Segment [Member] | Pass |  |  |
2024/2023 | 7,356 | 1,984 |
2023/2022 | 1,906 | 3,283 |
2022/2021 | 3,211 | 2,883 |
2021/2020 | 1,092 | 3,443 |
2020/2019 | 1,672 | 606 |
Prior | 1,123 | 2,121 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 16,360 | 14,320 |
Small Business Administration Portfolio Segment [Member] | Watch |  |  |
2020/2019 |  | 47 |
Prior | 774 | 2,847 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 774 | 2,894 |
Small Business Administration Portfolio Segment [Member] | Special Mention |  |  |
Prior | 325 | 348 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 325 | 348 |
Small Business Administration Portfolio Segment [Member] | Substandard |  |  |
2022/2021 |  | 1,627 |
2021/2020 | 1,691 |  |
Prior | 1,045 | 1,156 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 2,736 | 2,783 |
Commercial Business Portfolio Segment [Member] |  |  |
2024/2023 | 110,021 | 131,186 |
2023/2022 | 98,657 | 128,643 |
2022/2021 | 76,370 | 61,295 |
2021/2020 | 31,295 | 34,063 |
2020/2019 | 22,054 | 45,514 |
Prior | 104,475 | 84,690 |
Revolving Loans Amortized Cost Basis | 214,345 | 260,105 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 657,217 | 745,496 |
Gross charge-offs |  |  |
2024/2023 |  | 40 |
2022/2021 |  | 1,675 |
2021/2020 | 4,121 |  |
2020/2019 |  | 28 |
Prior | 266 | 10 |
Revolving Loans Amortized Cost Basis | 3,083 | 9,267 |
Total | 7,470 | 11,020 |
Commercial Business Portfolio Segment [Member] | Pass |  |  |
2024/2023 | 109,139 | 115,740 |
2023/2022 | 92,916 | 116,452 |
2022/2021 | 71,479 | 53,315 |
2021/2020 | 29,665 | 31,637 |
2020/2019 | 17,744 | 30,913 |
Prior | 99,620 | 53,289 |
Revolving Loans Amortized Cost Basis | 208,419 | 244,143 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 628,982 | 645,489 |
Commercial Business Portfolio Segment [Member] | Watch |  |  |
2024/2023 | 166 | 342 |
2023/2022 | 4,850 | 9,792 |
2022/2021 |  | 3,822 |
2021/2020 | 1,630 | 2,426 |
2020/2019 | 4,310 | 14,483 |
Prior | 1,720 | 18,495 |
Revolving Loans Amortized Cost Basis | 1,500 | 8,582 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 14,176 | 57,942 |
Commercial Business Portfolio Segment [Member] | Special Mention |  |  |
2020/2019 |  | 25 |
Prior | 16 |  |
Revolving Loans Amortized Cost Basis |  | 495 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 16 | 520 |
Commercial Business Portfolio Segment [Member] | Substandard |  |  |
2024/2023 | 716 | 14,642 |
2023/2022 | 429 | 2,399 |
2022/2021 | 4,891 | 4,158 |
2020/2019 |  | 93 |
Prior | 3,119 | 12,906 |
Revolving Loans Amortized Cost Basis | 3,856 | 2,982 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 13,011 | 37,180 |
Commercial Business Portfolio Segment [Member] | Doubtful |  |  |
2024/2023 |  | 462 |
2023/2022 | 462 |  |
Revolving Loans Amortized Cost Basis | 570 | 3,903 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 1,032 | 4,365 |
Commercial Business Secured By Portfolio Segment [member] |  |  |
2024/2023 | 77,284 | 46,723 |
2023/2022 | 45,976 | 177,136 |
2022/2021 | 169,904 | 130,608 |
2021/2020 | 125,523 | 106,545 |
2020/2019 | 103,515 | 54,324 |
Prior | 222,537 | 191,786 |
Revolving Loans Amortized Cost Basis | 673 |  |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 745,412 | 707,122 |
Commercial Business Secured By Portfolio Segment [member] | Pass |  |  |
2024/2023 | 68,613 | 36,993 |
2023/2022 | 45,976 | 176,825 |
2022/2021 | 169,904 | 130,608 |
2021/2020 | 125,523 | 106,545 |
2020/2019 | 99,794 | 38,846 |
Prior | 203,839 | 139,025 |
Revolving Loans Amortized Cost Basis | 673 |  |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 714,322 | 628,842 |
Commercial Business Secured By Portfolio Segment [member] | Watch |  |  |
2024/2023 | 8,671 | 9,730 |
2023/2022 |  | 311 |
2020/2019 | 3,721 | 586 |
Prior | 396 | 51,759 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 12,788 | 62,386 |
Commercial Business Secured By Portfolio Segment [member] | Special Mention |  |  |
2020/2019 |  | 14,892 |
Prior | 14,418 | 1,002 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 14,418 | 15,894 |
Commercial Business Secured By Portfolio Segment [member] | Substandard |  |  |
Prior | 3,884 |  |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 3,884 |  |
Other Portfolio Segment [Member] |  |  |
Prior | 85 | 133 |
Revolving Loans Amortized Cost Basis | 84 | 89 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 169 | 222 |
Gross charge-offs |  |  |
Prior | 57 | 99 |
Total | 57 | 99 |
Other Portfolio Segment [Member] | Pass |  |  |
Prior | 85 | 133 |
Revolving Loans Amortized Cost Basis | 84 | 89 |
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 169 | 222 |
Consumer Portfolio Segment [Member] |  |  |
Mortgage loans in process of foreclosure, amount | $ 2,700 | $ 4,800 |

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