LOANS HELD FOR INVESTMENT, NET - Performance of Modified Loans, After 12 Months (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	$ 86,149
Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	57,256	$ 40,058
Total Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty		42,281
30 to 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	129
60 to 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	27,601
Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	1,163	2,223
Business Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	20,064
Business Loans | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	19,668	12,496
Business Loans | Total Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty		14,627
Business Loans | 30 to 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	129
Business Loans | Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	267	2,131
One-to-Four Family Residential and Cooperative/Condominium Apartment
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	896
One-to-Four Family Residential and Cooperative/Condominium Apartment | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty		2,856
One-to-Four Family Residential and Cooperative/Condominium Apartment | Total Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty		2,948
One-to-Four Family Residential and Cooperative/Condominium Apartment | Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	896	92
Multifamily Residential and Residential Mixed-Use
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	34,087
Multifamily Residential and Residential Mixed-Use | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	6,486
Multifamily Residential and Residential Mixed-Use | 60 to 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	27,601
Non-Owner-Occupied Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	31,102
Non-Owner-Occupied Commercial Real Estate | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty	$ 31,102	24,706
Non-Owner-Occupied Commercial Real Estate | Total Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans that defaulted during the quarter and were modified in the 12 months before default to borrowers experiencing financial difficulty		$ 24,706