MORTGAGE LOANS RECEIVABLE - Summary of Mortgage Loans Receivable By Purpose (Details) - Mortgage Loans Receivable $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value | $	$ 1,946,422	$ 2,064,028
% of Portfolio	100.00%
Loan Count | loan	1,295
% of Portfolio	100.00%
Weighted Average Yield	8.70%
Weighted Average Original Life (Months)	17 years 2 months 12 days
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value | $	$ 913,495
% of Portfolio	46.90%
Loan Count | loan	515
% of Portfolio	39.70%
Weighted Average Yield	8.70%
Weighted Average Original Life (Months)	15 years 1 month 6 days
Weighted Average Committed Loan Balance to Value, LTC	76.80%
Weighted Average Committed Loan Balance to Value, LTARV	65.50%
Bridge
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value | $	$ 815,663
% of Portfolio	41.90%
Loan Count | loan	546
% of Portfolio	42.20%
Weighted Average Yield	8.60%
Weighted Average Original Life (Months)	20 years 6 months
Weighted Average Committed Loan Balance to Value	73.00%
Renovation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying Value | $	$ 217,264
% of Portfolio	11.20%
Loan Count | loan	234
% of Portfolio	18.10%
Weighted Average Yield	8.90%
Weighted Average Original Life (Months)	13 years 10 months 24 days
Weighted Average Committed Loan Balance to Value, LTC	77.80%
Weighted Average Committed Loan Balance to Value, LTARV	65.30%