LOANS RECEIVABLE AND INVESTMENTS, NET - Summary of Net Loans Receivable and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable
Non-mortgage loans receivable, net, carrying amount	$ 20,871	$ 28,129
Total loans receivable and investments, net, amortized cost	207,185	176,811
Allowance	(3,810)	(3,810)
Total loans receivable and investments, net, carrying amount	203,375	173,001
Total loans receivable and investments, net, fair value	203,536	173,869
Secured loans receivable and investments, net	182,504	144,872
Sales-type lease receivable	39,500	1,400
Non-mortgage loans receivable, net
Accounts, Notes, Loans and Financing Receivable
Total loans receivable and investments, net, amortized cost	24,681	31,939
Allowance	(3,810)	(3,810)
Total loans receivable and investments, net, carrying amount	20,871	28,129
Total loans receivable and investments, net, fair value	20,227	27,640
Secured loans receivable and investments
Accounts, Notes, Loans and Financing Receivable
Total loans receivable and investments, net, amortized cost	182,504	144,872
Allowance	0	0
Total loans receivable and investments, net, carrying amount	182,504	144,872
Total loans receivable and investments, net, fair value	$ 183,309	$ 146,229