BORROWINGS (Unsecured Junior Subordinated Debentures) (Details) - Unsecured Junior Subordinated Debentures - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2024	Dec. 31, 2023	Dec. 13, 2016
RCT I entity
Debt Instrument [Line Items]
Face amount of debt issued				$ 25.8
Debt issuance costs, amortization period (in years)	10 years
Interest rate at period end		9.51%	9.61%
RCT II entity
Debt Instrument [Line Items]
Face amount of debt issued				$ 25.8
Debt issuance costs, amortization period (in years)	10 years
Interest rate at period end		9.54%	9.60%