LOANS HELD FOR INVESTMENT, NET - Amortized Cost of Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 2,104	$ 880	$ 87,565	$ 3,732
% of Total Class of Financing Receivable	0.00%	0.00%	0.80%	0.00%
Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 1,200	$ 132	$ 1,340	$ 132
Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			84,584	2,852
Term Extension and Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified		472	709	472
Significant Payment Delay and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified		276	28	276
Term Extension and Interest Rate Reductions
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	904		904
Business Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 1,200	$ 880	$ 2,857	$ 880
% of Total Class of Financing Receivable	0.00%	0.00%	0.10%	0.00%
Business Loans | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 1,200	$ 132	$ 1,340	$ 132
Business Loans | Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			1,201
Business Loans | Term Extension and Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified		472	288	472
Business Loans | Significant Payment Delay and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified		$ 276	28	276
One-to-Four Family Residential and Cooperative/Condominium Apartment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 904		$ 1,325	$ 2,852
% of Total Class of Financing Receivable	0.10%	0.00%	0.10%	0.30%
One-to-Four Family Residential and Cooperative/Condominium Apartment | Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified				$ 2,852
One-to-Four Family Residential and Cooperative/Condominium Apartment | Term Extension and Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			$ 421
One-to-Four Family Residential and Cooperative/Condominium Apartment | Term Extension and Interest Rate Reductions
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified	$ 904		904
Multifamily Residential and Residential Mixed-Use
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			$ 52,290
% of Total Class of Financing Receivable			1.30%
Multifamily Residential and Residential Mixed-Use | Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			$ 52,290
Non-Owner-Occupied Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			$ 31,093
% of Total Class of Financing Receivable			0.90%
Non-Owner-Occupied Commercial Real Estate | Significant Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans that have been modified			$ 31,093