LOANS RECEIVABLE AND INVESTMENTS, NET - Summary of Net Loans Receivable and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable
Total loans receivable and investments, net, amortized cost	$ 466,204	$ 167,975
Allowance	(3,235)	(3,235)
Total loans receivable and investments, net, carrying amount	462,969	164,740
Total loans receivable and investments, net, fair value	454,511	166,796
Non-mortgage loans receivable, net
Accounts, Notes, Loans and Financing Receivable
Total loans receivable and investments, net, amortized cost	23,917	24,062
Allowance	(3,235)	(3,235)
Total loans receivable and investments, net, carrying amount	20,682	20,827
Total loans receivable and investments, net, fair value	19,598	20,432
Secured loans receivable and investments
Accounts, Notes, Loans and Financing Receivable
Total loans receivable and investments, net, amortized cost	442,287	143,913
Allowance	0	0
Total loans receivable and investments, net, carrying amount	442,287	143,913
Total loans receivable and investments, net, fair value	$ 434,913	$ 146,364