LOANS HELD FOR INVESTMENT, NET - Performance of Loans that have been Modified (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 42,281
Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	40,058
Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	2,223
One-to-four family residential and cooperative/condominium apartment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	2,948
One-to-four family residential and cooperative/condominium apartment | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	2,856
One-to-four family residential and cooperative/condominium apartment | Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	92
Commercial real estate ("CRE")
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	24,706
Commercial real estate ("CRE") | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	24,706
Commercial and Industrial ("C&I") Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	14,627
Commercial and Industrial ("C&I") Loans | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	12,496
Commercial and Industrial ("C&I") Loans | Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 2,131