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LOANS HELD FOR INVESTMENT, NET - Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Total | $ 10,824,518 |  | $ 10,824,518 |  | $ 10,766,837
Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 292,823 |  | 292,823 |  | 922,902
2023/2022 | 919,885 |  | 919,885 |  | 2,700,103
2022/2021 | 2,687,572 |  | 2,687,572 |  | 1,582,274
2021/2020 | 1,501,154 |  | 1,501,154 |  | 954,855
2020/2019 | 944,865 |  | 944,865 |  | 960,030
2019/2018 and Prior | 3,041,050 |  | 3,041,050 |  | 2,257,567
Revolving | 813,703 |  | 813,703 |  | 704,128
Revolving-Term | 73,436 |  | 73,436 |  | 60,048
Total | 10,274,488 |  | 10,274,488 |  | 10,141,907
Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 148 |  | 148 |  | 481
2023/2022 | 430 |  | 430 |  | 53,182
2022/2021 | 18,397 |  | 18,397 |  | 45,366
2021/2020 | 46,535 |  | 46,535 |  | 92,825
2020/2019 | 92,496 |  | 92,496 |  | 27,827
2019/2018 and Prior | 96,141 |  | 96,141 |  | 70,219
Revolving | 21,070 |  | 21,070 |  | 21,267
Revolving-Term | 9,983 |  | 9,983 |  | 26,082
Total | 285,200 |  | 285,200 |  | 337,249
Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2023/2022 |  |  |  |  | 1,857
2022/2021 | 9,019 |  | 9,019 |  | 2,196
2021/2020 | 2,800 |  | 2,800 |  | 96,805
2020/2019 | 84,473 |  | 84,473 |  | 14,483
2019/2018 and Prior | 126,540 |  | 126,540 |  | 130,103
Revolving | 1,542 |  | 1,542 |  | 15,567
Revolving-Term | 33,010 |  | 33,010 |  | 20,167
Total | 257,384 |  | 257,384 |  | 281,178
Doubtful |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2019/2018 and Prior | 747 |  | 747 |  | 748
Total | 747 |  | 747 |  | 748
Business Loans |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 178,754 |  | 178,754 |  | 259,180
2023/2022 | 254,800 |  | 254,800 |  | 434,299
2022/2021 | 406,281 |  | 406,281 |  | 200,169
2021/2020 | 215,872 |  | 215,872 |  | 165,092
2020/2019 | 181,272 |  | 181,272 |  | 160,799
2019/2018 and Prior | 444,397 |  | 444,397 |  | 339,404
Revolving | 759,044 |  | 759,044 |  | 670,394
Revolving-Term | 90,362 |  | 90,362 |  | 78,834
Total | 2,530,782 |  | 2,530,782 |  | 2,308,171
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
YTD Gross Charge-Offs 2022/2021 |  |  | 79 |  | 77
YTD Gross Charge-Offs 2021/2020 |  |  | 65 |  | 38
YTD Gross Charge-Offs 2020/2019 |  |  |  |  | 4,166
YTD Gross Charge-Offs 2019/2018 and Prior |  |  | 165 |  | 2,229
YTD Gross Charge-Offs Revolving |  |  |  |  | 5,464
YTD Gross Charge-Offs Revolving-Term |  |  | 1,666 |  | 3,390
YTD Gross Charge-Offs | 1,179 | $ 3,745 | 1,975 | $ 5,774 | 15,364
Business Loans | Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 178,606 |  | 178,606 |  | 258,699
2023/2022 | 254,370 |  | 254,370 |  | 390,760
2022/2021 | 380,067 |  | 380,067 |  | 196,790
2021/2020 | 210,387 |  | 210,387 |  | 144,796
2020/2019 | 172,763 |  | 172,763 |  | 150,871
2019/2018 and Prior | 410,411 |  | 410,411 |  | 305,258
Revolving | 736,591 |  | 736,591 |  | 633,719
Revolving-Term | 49,015 |  | 49,015 |  | 35,079
Total | 2,392,210 |  | 2,392,210 |  | 2,115,972
Business Loans | Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 148 |  | 148 |  | 481
2023/2022 | 430 |  | 430 |  | 41,682
2022/2021 | 17,195 |  | 17,195 |  | 1,199
2021/2020 | 2,700 |  | 2,700 |  | 13,567
2020/2019 | 3,184 |  | 3,184 |  | 7,125
2019/2018 and Prior | 10,588 |  | 10,588 |  | 3,150
Revolving | 20,911 |  | 20,911 |  | 21,108
Revolving-Term | 9,983 |  | 9,983 |  | 25,306
Total | 65,139 |  | 65,139 |  | 113,618
Business Loans | Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2023/2022 |  |  |  |  | 1,857
2022/2021 | 9,019 |  | 9,019 |  | 2,180
2021/2020 | 2,785 |  | 2,785 |  | 6,729
2020/2019 | 5,325 |  | 5,325 |  | 2,803
2019/2018 and Prior | 22,651 |  | 22,651 |  | 30,248
Revolving | 1,542 |  | 1,542 |  | 15,567
Revolving-Term | 31,364 |  | 31,364 |  | 18,449
Total | 72,686 |  | 72,686 |  | 77,833
Business Loans | Doubtful |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2019/2018 and Prior | 747 |  | 747 |  | 748
Total | 747 |  | 747 |  | 748
One-to-Four Family Residential and Cooperative/Condominium Apartment |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 49,128 |  | 49,128 |  | 170,601
2023/2022 | 165,759 |  | 165,759 |  | 213,479
2022/2021 | 209,364 |  | 209,364 |  | 102,684
2021/2020 | 100,701 |  | 100,701 |  | 70,529
2020/2019 | 66,789 |  | 66,789 |  | 62,693
2019/2018 and Prior | 273,837 |  | 273,837 |  | 221,875
Revolving | 30,260 |  | 30,260 |  | 31,364
Revolving-Term | 11,024 |  | 11,024 |  | 14,330
Total | 906,862 |  | 906,862 |  | 887,555
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
YTD Gross Charge-Offs Revolving-Term |  |  |  |  | 14
YTD Gross Charge-Offs |  | 14 |  | 14 | 14
One-to-Four Family Residential and Cooperative/Condominium Apartment | Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 49,128 |  | 49,128 |  | 170,601
2023/2022 | 165,759 |  | 165,759 |  | 213,479
2022/2021 | 209,364 |  | 209,364 |  | 102,684
2021/2020 | 100,701 |  | 100,701 |  | 69,524
2020/2019 | 65,794 |  | 65,794 |  | 62,356
2019/2018 and Prior | 263,934 |  | 263,934 |  | 213,131
Revolving | 30,101 |  | 30,101 |  | 31,205
Revolving-Term | 10,035 |  | 10,035 |  | 12,493
Total | 894,816 |  | 894,816 |  | 875,473
One-to-Four Family Residential and Cooperative/Condominium Apartment | Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2019/2018 and Prior | 726 |  | 726 |  | 33
Revolving | 159 |  | 159 |  | 159
Revolving-Term |  |  |  |  | 776
Total | 885 |  | 885 |  | 968
One-to-Four Family Residential and Cooperative/Condominium Apartment | Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2021/2020 |  |  |  |  | 1,005
2020/2019 | 995 |  | 995 |  | 337
2019/2018 and Prior | 9,177 |  | 9,177 |  | 8,711
Revolving-Term | 989 |  | 989 |  | 1,061
Total | 11,161 |  | 11,161 |  | 11,114
Multifamily Residential and Residential Mixed-Use |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 11,037 |  | 11,037 |  | 256,822
2023/2022 | 255,410 |  | 255,410 |  | 1,340,197
2022/2021 | 1,330,744 |  | 1,330,744 |  | 587,686
2021/2020 | 567,391 |  | 567,391 |  | 316,312
2020/2019 | 322,684 |  | 322,684 |  | 393,912
2019/2018 and Prior | 1,423,104 |  | 1,423,104 |  | 1,113,081
Revolving | 4,588 |  | 4,588 |  | 4,841
Revolving-Term | 5,369 |  | 5,369 |  | 4,325
Total | 3,920,327 |  | 3,920,327 |  | 4,017,176
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
YTD Gross Charge-Offs 2019/2018 and Prior |  |  | 2,551 |  | 2
YTD Gross Charge-Offs | 2,551 |  | 2,551 |  | 2
Multifamily Residential and Residential Mixed-Use | Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 11,037 |  | 11,037 |  | 256,822
2023/2022 | 255,410 |  | 255,410 |  | 1,340,197
2022/2021 | 1,329,542 |  | 1,329,542 |  | 578,352
2021/2020 | 558,110 |  | 558,110 |  | 283,633
2020/2019 | 290,149 |  | 290,149 |  | 384,937
2019/2018 and Prior | 1,300,167 |  | 1,300,167 |  | 981,820
Revolving | 4,588 |  | 4,588 |  | 4,841
Revolving-Term | 5,369 |  | 5,369 |  | 4,325
Total | 3,754,372 |  | 3,754,372 |  | 3,834,927
Multifamily Residential and Residential Mixed-Use | Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2022/2021 | 1,202 |  | 1,202 |  | 9,334
2021/2020 | 9,281 |  | 9,281 |  | 3,880
2020/2019 | 14,327 |  | 14,327 |  | 3,886
2019/2018 and Prior | 58,240 |  | 58,240 |  | 64,273
Total | 83,050 |  | 83,050 |  | 81,373
Multifamily Residential and Residential Mixed-Use | Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2021/2020 |  |  |  |  | 28,799
2020/2019 | 18,208 |  | 18,208 |  | 5,089
2019/2018 and Prior | 64,697 |  | 64,697 |  | 66,988
Total | 82,905 |  | 82,905 |  | 100,876
Non-Owner-Occupied Commercial Real Estate |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 43,844 |  | 43,844 |  | 220,045
2023/2022 | 217,009 |  | 217,009 |  | 738,133
2022/2021 | 733,846 |  | 733,846 |  | 665,134
2021/2020 | 628,246 |  | 628,246 |  | 582,652
2020/2019 | 551,089 |  | 551,089 |  | 370,018
2019/2018 and Prior | 1,120,316 |  | 1,120,316 |  | 783,840
Revolving | 11,809 |  | 11,809 |  | 11,919
Revolving-Term | 8,829 |  | 8,829 |  | 7,926
Total | 3,314,988 |  | 3,314,988 |  | 3,379,667
Non-Owner-Occupied Commercial Real Estate | Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 43,844 |  | 43,844 |  | 220,045
2023/2022 | 217,009 |  | 217,009 |  | 738,133
2022/2021 | 733,846 |  | 733,846 |  | 645,246
2021/2020 | 608,644 |  | 608,644 |  | 447,002
2020/2019 | 416,159 |  | 416,159 |  | 359,201
2019/2018 and Prior | 1,063,714 |  | 1,063,714 |  | 756,921
Revolving | 11,809 |  | 11,809 |  | 11,919
Revolving-Term | 8,829 |  | 8,829 |  | 7,926
Total | 3,103,854 |  | 3,103,854 |  | 3,186,393
Non-Owner-Occupied Commercial Real Estate | Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2022/2021 |  |  |  |  | 19,872
2021/2020 | 19,587 |  | 19,587 |  | 75,378
2020/2019 | 74,985 |  | 74,985 |  | 4,563
2019/2018 and Prior | 26,587 |  | 26,587 |  | 2,763
Total | 121,159 |  | 121,159 |  | 102,576
Non-Owner-Occupied Commercial Real Estate | Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2022/2021 |  |  |  |  | 16
2021/2020 | 15 |  | 15 |  | 60,272
2020/2019 | 59,945 |  | 59,945 |  | 6,254
2019/2018 and Prior | 30,015 |  | 30,015 |  | 24,156
Total | 89,975 |  | 89,975 |  | 90,698
Non-Owner-Occupied Commercial Real Estate | Real estate loan |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Total | 3,314,988 |  | 3,314,988 |  | 3,379,667
Acquisition, development, and construction ("ADC") |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 10,208 |  | 10,208 |  | 16,735
2023/2022 | 27,337 |  | 27,337 |  | 29,034
2022/2021 | 34,753 |  | 34,753 |  | 74,163
2021/2020 | 38,279 |  | 38,279 |  | 9,900
2020/2019 |  |  |  |  | 14,918
2019/2018 and Prior | 2,824 |  | 2,824 |  | 437
Revolving | 30,614 |  | 30,614 |  | 22,444
Revolving-Term | 845 |  | 845 |  | 882
Total | 144,860 |  | 144,860 |  | 168,513
Acquisition, development, and construction ("ADC") | Pass |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 10,208 |  | 10,208 |  | 16,735
2023/2022 | 27,337 |  | 27,337 |  | 17,534
2022/2021 | 34,753 |  | 34,753 |  | 59,202
2021/2020 | 23,312 |  | 23,312 |  | 9,900
2020/2019 |  |  |  |  | 2,665
2019/2018 and Prior | 2,824 |  | 2,824 |  | 437
Revolving | 30,614 |  | 30,614 |  | 22,444
Revolving-Term | 188 |  | 188 |  | 225
Total | 129,236 |  | 129,236 |  | 129,142
Acquisition, development, and construction ("ADC") | Special Mention |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2023/2022 |  |  |  |  | 11,500
2022/2021 |  |  |  |  | 14,961
2021/2020 | 14,967 |  | 14,967 |  |
2020/2019 |  |  |  |  | 12,253
Total | 14,967 |  | 14,967 |  | 38,714
Acquisition, development, and construction ("ADC") | Substandard |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Revolving-Term | 657 |  | 657 |  | 657
Total | 657 |  | 657 |  | 657
Other Loans |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Total | 6,699 |  | 6,699 |  | 5,755
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
YTD Gross Charge-Offs | 15 | $ 33 | 45 | $ 34 |
Other Loans | Credit Risk Profile |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Total | 6,699 |  | 6,699 |  | 5,755
Other Loans | Performing | Credit Risk Profile |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
Total | 6,699 |  | 6,699 |  | 5,755
Excludes Other Loans |  |  |  |  |
Credit Risk Profile of Real Estate Loans [Abstract] |  |  |  |  |
2024/2023 | 292,971 |  | 292,971 |  | 923,383
2023/2022 | 920,315 |  | 920,315 |  | 2,755,142
2022/2021 | 2,714,988 |  | 2,714,988 |  | 1,629,836
2021/2020 | 1,550,489 |  | 1,550,489 |  | 1,144,485
2020/2019 | 1,121,834 |  | 1,121,834 |  | 1,002,340
2019/2018 and Prior | 3,264,478 |  | 3,264,478 |  | 2,458,637
Revolving | 836,315 |  | 836,315 |  | 740,962
Revolving-Term | 116,429 |  | 116,429 |  | 106,297
Total | $ 10,817,819 |  | 10,817,819 |  | 10,761,082
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |  |  |
YTD Gross Charge-Offs 2022/2021 |  |  | 79 |  | 77
YTD Gross Charge-Offs 2021/2020 |  |  | 65 |  | 38
YTD Gross Charge-Offs 2020/2019 |  |  |  |  | 4,166
YTD Gross Charge-Offs 2019/2018 and Prior |  |  | 2,716 |  | 2,231
YTD Gross Charge-Offs Revolving |  |  |  |  | 5,464
YTD Gross Charge-Offs Revolving-Term |  |  | 1,666 |  | 3,404
YTD Gross Charge-Offs |  |  | $ 4,526 |  | $ 15,380

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