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LOANS RECEIVABLE, NET - Dependent Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	$ 4,423,780	$ 4,411,319
Associated Allowance for Credit Losses	64,400	65,691	$ 67,323	$ 45,031
Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	353,598	353,432
Associated Allowance for Credit Losses	1,405		2,455	3,627
Commercial portfolio \| Construction and land development
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	23,266	23,626
Associated Allowance for Credit Losses	853		$ 354	$ 825
Commercial real estate
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	20,677	20,855
Associated Allowance for Credit Losses	822	0
Commercial real estate \| Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	4,354	4,490
Associated Allowance for Credit Losses	0	0
Commercial real estate \| Commercial portfolio \| Construction and land development
Financing Receivable, Past Due [Line Items]
Real Estate Collateral Dependent	16,323	16,365
Associated Allowance for Credit Losses	$ 822	$ 0