FAIR VALUE DISCLOSURES - Face Values, Carrying Amounts and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial assets:
Loans receivable	$ 370,364	$ 352,159
Preferred equity investments	50,902	56,805
Senior Notes
Financial liabilities:
Financial liabilities	1,750,000	1,750,000
Secured Indebtedness
Financial liabilities:
Financial liabilities	50,123	67,602
Carrying Amount
Financial assets:
Loans receivable	360,325	342,031
Preferred equity investments	51,071	57,055
Carrying Amount | Senior Notes
Financial liabilities:
Financial liabilities	1,734,431	1,733,566
Carrying Amount | Secured Indebtedness
Financial liabilities:
Financial liabilities	49,232	66,663
Fair Value
Financial assets:
Loans receivable	370,188	350,107
Preferred equity investments	51,995	57,784
Fair Value | Senior Notes
Financial liabilities:
Financial liabilities	1,463,041	1,808,781
Fair Value | Secured Indebtedness
Financial liabilities:
Financial liabilities	$ 38,149	$ 65,361