LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	$ 4,446,342	$ 4,231,742
Credit Card Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	12,638	10,825
Total	103
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	1,378,180	1,294,785
Performing | Credit Card Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	12,541	10,817
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	6,362	5,769
Nonperforming | Credit Card Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Net loans receivable	$ 97	$ 8