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LOANS HELD FOR INVESTMENT, NET - Past Due Status (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | $ 10,566,831 | $ 9,244,661
Non-accrual | 28,162 |
Aggregate outstanding balance |  | 3,000
Non-accrual | 34,237 | 40,307
Principal balances outstanding | 10,566,831 | 9,244,661
Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Principal balances outstanding | 58,496 | 116,696
30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Principal balances outstanding | 23,517 | 61,242
60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Principal balances outstanding | 742 | 12,146
Loans 90 Days or More Past Due and Still Accruing Interest |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Principal balances outstanding |  | 3,001
Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Principal balances outstanding | 10,508,335 | 9,127,965
Total real estate loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 9,487,440 | 8,294,204
Non-accrual | 12,192 | 12,676
Total real estate loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 31,884 | 77,109
Total real estate loans | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 19,692 | 57,385
Total real estate loans | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 5,103
Total real estate loans | Loans 90 Days or More Past Due and Still Accruing Interest |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 1,945
Total real estate loans | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 9,455,556 | 8,217,095
One-to-four family residential and cooperative/condominium apartment |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 773,321 | 669,282
Non-accrual | 3,203 | 7,623
One-to-four family residential and cooperative/condominium apartment | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 3,889 | 13,739
One-to-four family residential and cooperative/condominium apartment | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 686 | 3,294
One-to-four family residential and cooperative/condominium apartment | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 877
One-to-four family residential and cooperative/condominium apartment | Loans 90 Days or More Past Due and Still Accruing Interest |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 1,945
One-to-four family residential and cooperative/condominium apartment | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 769,432 | 655,543
Multifamily residential and residential mixed-use |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,026,826 | 3,356,346
Multifamily residential and residential mixed-use | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,817 | 34,322
Multifamily residential and residential mixed-use | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,817 | 30,983
Multifamily residential and residential mixed-use | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 3,339
Multifamily residential and residential mixed-use | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,022,009 | 3,322,024
Commercial real estate ("CRE") |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,457,630 | 3,945,948
Non-accrual | 8,332 | 5,053
Commercial real estate ("CRE") | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 22,521 | 29,048
Commercial real estate ("CRE") | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 14,189 | 23,108
Commercial real estate ("CRE") | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 887
Commercial real estate ("CRE") | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 4,435,109 | 3,916,900
Acquisition, development, and construction |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 229,663 | 322,628
Non-accrual | 657 |
Acquisition, development, and construction | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 657 |
Acquisition, development, and construction | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 229,006 | 322,628
Commercial and Industrial ("C&I") Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 1,071,712 | 933,559
Non-accrual | 21,946 | 27,266
Commercial and Industrial ("C&I") Loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 26,248 | 39,115
Commercial and Industrial ("C&I") Loans | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 3,561 | 3,753
Commercial and Industrial ("C&I") Loans | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 741 | 7,040
Commercial and Industrial ("C&I") Loans | Loans 90 Days or More Past Due and Still Accruing Interest |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans |  | 1,056
Commercial and Industrial ("C&I") Loans | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 1,045,464 | 894,444
Other Loans |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 7,679 | 16,898
Non-accrual | 99 | 365
Other Loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 364 | 472
Other Loans | 30 to 59 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 264 | 104
Other Loans | 60 to 89 Days Past Due |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | 1 | 3
Other Loans | Current |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |
Total Loans | $ 7,315 | $ 16,426

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