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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
2023/2022 | $ 668,603 | $ 1,248,767 |
2022/2021 | 1,164,733 | 779,882 |
2021/2020 | 706,194 | 606,642 |
2020/2019 | 556,884 | 807,955 |
2019/2018 | 727,117 | 866,649 |
Prior | 2,753,051 | 2,283,871 |
Revolving Loans Amortized Cost Basis | 319,483 | 326,506 |
Revolving Loans converted to term loans | 11,834 | 14,497 |
Total Loans | 6,907,899 | 6,934,769 |
Gross charge-offs |  |  |
2023 | 40 |  |
2021 | 1,675 |  |
2019 | 28 |  |
Prior | 147 |  |
Revolving Loans Amortized Cost Basis | 9,267 |  |
Charge-offs | 11,157 | 3,348 | $ 5,134
Basis adjustments | 949 |  |
Portfolio Layer Hedges on Closed Portfolio of Loans [Member] | Designated as Hedging Instrument [Member] |  |  |
Gross charge-offs |  |  |
Basis adjustments | 900 |  |
Pass |  |  |
2023/2022 | 643,427 | 1,240,231 |
2022/2021 | 1,150,854 | 772,654 |
2021/2020 | 694,182 | 598,931 |
2020/2019 | 552,523 | 731,423 |
2019/2018 | 685,238 | 827,361 |
Prior | 2,585,019 | 2,153,145 |
Revolving Loans Amortized Cost Basis | 303,521 | 307,681 |
Revolving Loans converted to term loans | 10,067 | 13,190 |
Total Loans | 6,624,831 | 6,644,616 |
Watch |  |  |
2023/2022 | 10,072 | 5,592 |
2022/2021 | 11,480 | 4,783 |
2021/2020 | 6,227 | 2,968 |
2020/2019 | 4,361 | 61,258 |
2019/2018 | 26,149 | 33,887 |
Prior | 136,956 | 111,135 |
Revolving Loans Amortized Cost Basis | 8,582 | 1,753 |
Revolving Loans converted to term loans | 1,130 | 863 |
Total Loans | 204,957 | 222,239 |
Special Mention |  |  |
2022/2021 |  | 2,445 |
2021/2020 |  | 4,743 |
2020/2019 |  | 15,243 |
2019/2018 | 15,637 | 2,219 |
Prior | 4,206 | 7,501 |
Revolving Loans Amortized Cost Basis | 495 |  |
Revolving Loans converted to term loans | 169 |  |
Total Loans | 20,507 | 32,151 |
Substandard |  |  |
2023/2022 | 14,642 | 2,944 |
2022/2021 | 2,399 |  |
2021/2020 | 5,785 |  |
2020/2019 |  | 31 |
2019/2018 | 93 | 3,182 |
Prior | 26,870 | 12,090 |
Revolving Loans Amortized Cost Basis | 2,982 | 7,030 |
Revolving Loans converted to term loans | 468 | 444 |
Total Loans | 53,239 | 25,721 |
Doubtful |  |  |
2023/2022 | 462 |  |
Revolving Loans Amortized Cost Basis | 3,903 | 10,042 |
Total Loans | 4,365 | 10,042 |
One-To-Four Family - Residential Portfolio Segment [Member] |  |  |
2023/2022 | 6,289 | 24,207 |
2022/2021 | 23,704 | 8,983 |
2021/2020 | 8,721 | 18,657 |
2020/2019 | 16,482 | 42,554 |
2019/2018 | 38,340 | 24,962 |
Prior | 108,725 | 100,550 |
Revolving Loans Amortized Cost Basis | 7,424 | 8,070 |
Revolving Loans converted to term loans | 11,834 | 14,497 |
Total Loans | 221,519 | 242,480 |
Gross charge-offs |  |  |
Prior | 23 |  |
Charge-offs | 23 | 20 |
One-To-Four Family - Residential Portfolio Segment [Member] | Pass |  |  |
2023/2022 | 6,289 | 24,207 |
2022/2021 | 23,197 | 8,697 |
2021/2020 | 8,451 | 18,657 |
2020/2019 | 16,482 | 41,820 |
2019/2018 | 36,779 | 24,962 |
Prior | 102,293 | 94,270 |
Revolving Loans Amortized Cost Basis | 7,424 | 8,007 |
Revolving Loans converted to term loans | 10,067 | 13,190 |
Total Loans | 210,982 | 233,810 |
One-To-Four Family - Residential Portfolio Segment [Member] | Watch |  |  |
2022/2021 | 507 | 286 |
2021/2020 | 270 |  |
2020/2019 |  | 734 |
2019/2018 | 1,561 |  |
Prior | 695 | 2,419 |
Revolving Loans Amortized Cost Basis |  | 63 |
Revolving Loans converted to term loans | 1,130 | 863 |
Total Loans | 4,163 | 4,365 |
One-To-Four Family - Residential Portfolio Segment [Member] | Special Mention |  |  |
Revolving Loans converted to term loans | 169 |  |
Total Loans | 169 |  |
One-To-Four Family - Residential Portfolio Segment [Member] | Substandard |  |  |
Prior | 5,737 | 3,861 |
Revolving Loans converted to term loans | 468 | 444 |
Total Loans | 6,205 | 4,305 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] |  |  |
2023/2022 | 22,852 | 44,988 |
2022/2021 | 43,579 | 43,157 |
2021/2020 | 41,604 | 33,548 |
2020/2019 | 30,984 | 64,706 |
2019/2018 | 61,261 | 64,904 |
Prior | 332,804 | 305,992 |
Total Loans | 533,084 | 557,295 |
Gross charge-offs |  |  |
Charge-offs |  |  | 33
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Pass |  |  |
2023/2022 | 22,852 | 44,988 |
2022/2021 | 43,579 | 43,157 |
2021/2020 | 41,604 | 32,663 |
2020/2019 | 30,984 | 63,973 |
2019/2018 | 60,308 | 64,904 |
Prior | 326,246 | 297,053 |
Total Loans | 525,573 | 546,738 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Watch |  |  |
2021/2020 |  | 885 |
2020/2019 |  | 733 |
2019/2018 | 233 |  |
Prior | 4,777 | 7,246 |
Total Loans | 5,010 | 8,864 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Special Mention |  |  |
2019/2018 | 720 |  |
Prior | 564 | 719 |
Total Loans | 1,284 | 719 |
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Substandard |  |  |
Prior | 1,217 | 974 |
Total Loans | 1,217 | 974 |
Commercial Real Estate [Member] |  |  |
2023/2022 | 199,420 | 330,255 |
2022/2021 | 322,446 | 183,460 |
2021/2020 | 176,460 | 152,526 |
2020/2019 | 147,871 | 241,592 |
2019/2018 | 226,203 | 247,423 |
Prior | 887,224 | 759,642 |
Total Loans | 1,959,624 | 1,914,898 |
Gross charge-offs |  |  |
Prior | 8 |  |
Charge-offs | 8 |  | 64
Commercial Real Estate [Member] | Pass |  |  |
2023/2022 | 199,420 | 328,284 |
2022/2021 | 322,446 | 181,881 |
2021/2020 | 175,045 | 152,526 |
2020/2019 | 147,871 | 230,995 |
2019/2018 | 216,964 | 240,622 |
Prior | 862,641 | 744,503 |
Total Loans | 1,924,387 | 1,878,811 |
Commercial Real Estate [Member] | Watch |  |  |
2023/2022 |  | 1,971 |
2022/2021 |  | 1,579 |
2021/2020 | 1,415 |  |
2020/2019 |  | 10,597 |
2019/2018 | 9,239 | 6,801 |
Prior | 23,484 | 10,836 |
Total Loans | 34,138 | 31,784 |
Commercial Real Estate [Member] | Special Mention |  |  |
Prior | 1,099 | 4,041 |
Total Loans | 1,099 | 4,041 |
Commercial Real Estate [Member] | Substandard |  |  |
Prior |  | 262 |
Total Loans |  | 262 |
Construction Portfolio Segment |  |  |
2023/2022 | 5,809 | 1,984 |
2022/2021 | 3 | 17,555 |
2021/2020 | 5,793 | 14,385 |
2019/2018 |  | 6,450 |
Prior |  | 2,600 |
Revolving Loans Amortized Cost Basis | 46,656 | 27,850 |
Total Loans | 58,261 | 70,824 |
Construction Portfolio Segment | Pass |  |  |
2023/2022 | 5,809 | 1,984 |
2022/2021 | 3 | 17,555 |
2021/2020 | 5,793 | 14,385 |
Revolving Loans Amortized Cost Basis | 46,656 | 27,850 |
Total Loans | 58,261 | 61,774 |
Construction Portfolio Segment | Watch |  |  |
2019/2018 |  | 6,450 |
Total Loans |  | 6,450 |
Construction Portfolio Segment | Substandard |  |  |
Prior |  | 2,600 |
Total Loans |  | 2,600 |
Multi-family Residential Portfolio Segment [Member] |  |  |
2023/2022 | 254,340 | 483,513 |
2022/2021 | 465,939 | 287,889 |
2021/2020 | 277,203 | 226,560 |
2020/2019 | 217,496 | 312,681 |
2019/2018 | 300,822 | 400,704 |
Prior | 1,141,217 | 887,710 |
Revolving Loans Amortized Cost Basis | 5,209 | 6,115 |
Total Loans | 2,662,226 | 2,605,172 |
Gross charge-offs |  |  |
Charge-offs |  | 208 | $ 43
Multi-family Residential Portfolio Segment [Member] | Pass |  |  |
2023/2022 | 254,340 | 482,600 |
2022/2021 | 465,069 | 287,889 |
2021/2020 | 276,483 | 225,106 |
2020/2019 | 215,561 | 312,681 |
2019/2018 | 300,822 | 393,590 |
Prior | 1,099,271 | 869,566 |
Revolving Loans Amortized Cost Basis | 5,209 | 6,115 |
Total Loans | 2,616,755 | 2,577,547 |
Multi-family Residential Portfolio Segment [Member] | Watch |  |  |
2023/2022 |  | 913 |
2022/2021 | 870 |  |
2021/2020 | 720 | 1,454 |
2020/2019 | 1,935 |  |
2019/2018 |  | 3,770 |
Prior | 34,899 | 14,439 |
Total Loans | 38,424 | 20,576 |
Multi-family Residential Portfolio Segment [Member] | Special Mention |  |  |
2019/2018 |  | 446 |
Prior | 1,193 | 2,286 |
Total Loans | 1,193 | 2,732 |
Multi-family Residential Portfolio Segment [Member] | Substandard |  |  |
2019/2018 |  | 2,898 |
Prior | 5,854 | 1,419 |
Total Loans | 5,854 | 4,317 |
Commercial Business Secured By Portfolio Segment [member] |  |  |
2023/2022 | 46,723 | 185,658 |
2022/2021 | 177,136 | 139,748 |
2021/2020 | 130,608 | 109,921 |
2020/2019 | 106,545 | 83,600 |
2019/2018 | 54,324 | 66,857 |
Prior | 191,786 | 145,163 |
Total Loans | 707,122 | 730,947 |
Commercial Business Secured By Portfolio Segment [member] | Pass |  |  |
2023/2022 | 36,993 | 182,805 |
2022/2021 | 176,825 | 139,748 |
2021/2020 | 130,608 | 109,292 |
2020/2019 | 106,545 | 40,175 |
2019/2018 | 38,846 | 66,436 |
Prior | 139,025 | 89,663 |
Total Loans | 628,842 | 628,119 |
Commercial Business Secured By Portfolio Segment [member] | Watch |  |  |
2023/2022 | 9,730 |  |
2022/2021 | 311 |  |
2021/2020 |  | 629 |
2020/2019 |  | 28,217 |
2019/2018 | 586 | 421 |
Prior | 51,759 | 55,500 |
Total Loans | 62,386 | 84,767 |
Commercial Business Secured By Portfolio Segment [member] | Special Mention |  |  |
2020/2019 |  | 15,208 |
2019/2018 | 14,892 |  |
Prior | 1,002 |  |
Total Loans | 15,894 | 15,208 |
Commercial Business Secured By Portfolio Segment [member] | Substandard |  |  |
2023/2022 |  | 2,853 |
Total Loans |  | 2,853 |
Commercial Business Portfolio Segment [Member] |  |  |
2023/2022 | 131,186 | 174,810 |
2022/2021 | 128,643 | 93,444 |
2021/2020 | 61,295 | 46,741 |
2020/2019 | 34,063 | 62,117 |
2019/2018 | 45,514 | 52,032 |
Prior | 84,690 | 76,302 |
Revolving Loans Amortized Cost Basis | 260,105 | 284,386 |
Total Loans | 745,496 | 789,832 |
Gross charge-offs |  |  |
2023 | 40 |  |
2021 | 1,675 |  |
2019 | 28 |  |
Prior | 10 |  |
Revolving Loans Amortized Cost Basis | 9,267 |  |
Charge-offs | 11,020 |  |
Commercial Business Portfolio Segment [Member] | Pass |  |  |
2023/2022 | 115,740 | 172,011 |
2022/2021 | 116,452 | 88,081 |
2021/2020 | 53,315 | 41,998 |
2020/2019 | 31,637 | 41,125 |
2019/2018 | 30,913 | 35,555 |
Prior | 53,289 | 56,281 |
Revolving Loans Amortized Cost Basis | 244,143 | 265,624 |
Total Loans | 645,489 | 700,675 |
Commercial Business Portfolio Segment [Member] | Watch |  |  |
2023/2022 | 342 | 2,708 |
2022/2021 | 9,792 | 2,918 |
2021/2020 | 3,822 |  |
2020/2019 | 2,426 | 20,926 |
2019/2018 | 14,483 | 14,420 |
Prior | 18,495 | 17,823 |
Revolving Loans Amortized Cost Basis | 8,582 | 1,690 |
Total Loans | 57,942 | 60,485 |
Commercial Business Portfolio Segment [Member] | Special Mention |  |  |
2022/2021 |  | 2,445 |
2021/2020 |  | 4,743 |
2020/2019 |  | 35 |
2019/2018 | 25 | 1,773 |
Prior |  | 416 |
Revolving Loans Amortized Cost Basis | 495 |  |
Total Loans | 520 | 9,412 |
Commercial Business Portfolio Segment [Member] | Substandard |  |  |
2023/2022 | 14,642 | 91 |
2022/2021 | 2,399 |  |
2021/2020 | 4,158 |  |
2020/2019 |  | 31 |
2019/2018 | 93 | 284 |
Prior | 12,906 | 1,782 |
Revolving Loans Amortized Cost Basis | 2,982 | 7,030 |
Total Loans | 37,180 | 9,218 |
Commercial Business Portfolio Segment [Member] | Doubtful |  |  |
2023/2022 | 462 |  |
Revolving Loans Amortized Cost Basis | 3,903 | 10,042 |
Total Loans | 4,365 | 10,042 |
Small Business Administration Portfolio Segment [Member] |  |  |
2023/2022 | 1,984 | 3,352 |
2022/2021 | 3,283 | 5,646 |
2021/2020 | 4,510 | 4,304 |
2020/2019 | 3,443 | 705 |
2019/2018 | 653 | 3,317 |
Prior | 6,472 | 5,869 |
Total Loans | 20,345 | 23,193 |
Gross charge-offs |  |  |
Prior | 7 |  |
Charge-offs | 7 | 1,053 |
Small Business Administration Portfolio Segment [Member] | Pass |  |  |
2023/2022 | 1,984 | 3,352 |
2022/2021 | 3,283 | 5,646 |
2021/2020 | 2,883 | 4,304 |
2020/2019 | 3,443 | 654 |
2019/2018 | 606 | 1,292 |
Prior | 2,121 | 1,766 |
Total Loans | 14,320 | 17,014 |
Small Business Administration Portfolio Segment [Member] | Watch |  |  |
2020/2019 |  | 51 |
2019/2018 | 47 | 2,025 |
Prior | 2,847 | 2,872 |
Total Loans | 2,894 | 4,948 |
Small Business Administration Portfolio Segment [Member] | Special Mention |  |  |
Prior | 348 | 39 |
Total Loans | 348 | 39 |
Small Business Administration Portfolio Segment [Member] | Substandard |  |  |
2021/2020 | 1,627 |  |
Prior | 1,156 | 1,192 |
Total Loans | 2,783 | 1,192 |
Other Portfolio Segment [Member] |  |  |
Prior | 133 | 43 |
Revolving Loans Amortized Cost Basis | 89 | 85 |
Total Loans | 222 | 128 |
Gross charge-offs |  |  |
Prior | 99 |  |
Charge-offs | 99 |  |
Other Portfolio Segment [Member] | Pass |  |  |
Prior | 133 | 43 |
Revolving Loans Amortized Cost Basis | 89 | 85 |
Total Loans | 222 | 128 |
Consumer Portfolio Segment [Member] |  |  |
Mortgage loans in process of foreclosure, amount | $ 4,800 | $ 5,200 |

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