LOANS RECEIVABLE AND INVESTMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable
Debt Securities, Held-to-maturity, Allowance for Credit Loss	$ (5,333)	$ (5,394)
Debt securities, available-for-sale, unrealized gain	1,249	1,836
Non-mortgage loans receivable, net	24,116	19,024
Total loans receivable and investments, net, amortized cost	558,588	552,707
Total loans receivable and investments, net, carrying amount	554,504	549,150
Total loans receivable and investments, net, fair value	548,878	539,183
Non-mortgage loans receivable, net
Accounts, Notes, Loans and Financing Receivable
Debt Securities, Held-to-maturity, Allowance for Credit Loss	(5,333)	(5,394)
Non-mortgage loans receivable, amortized cost	29,449	24,418
Non-mortgage loans receivable, net, unrealized gain	0	0
Non-mortgage loans receivable, net	24,116	19,024
Non-mortgage loans receivable, fair value	23,826	19,039
Secured/mortgage loans and other, net
Accounts, Notes, Loans and Financing Receivable
Secured mortgage loans and other, net	488,827	488,913
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Debt securities, held-to-maturity, accumulated unrecognized gain	0	0
Debt securities, held-to-maturity, fair value	483,491	478,931
Government-sponsored pooled loan investments, net
Accounts, Notes, Loans and Financing Receivable
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Debt securities, available-for-sale, amortized cost	40,312	39,376
Debt securities, available-for-sale, unrealized gain	1,249	1,836
Government-sponsored pooled loan investments, net	41,561	41,213
Total investments reported as secured loans receivable and investments, net
Accounts, Notes, Loans and Financing Receivable
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
Debt securities, available-for-sale, unrealized gain	1,249	1,836
Debt securities, available-for-sale and held-to-maturity, amortized cost	529,139	528,289
Debt Securities, Available-for-sale and Held-to-maturity	530,388	530,126
Debt securities, Available-for-Sale and Held-to-Maturity, fair value	$ 525,052	$ 520,144