FAIR VALUE MEASUREMENT - Schedule of Financial Assets and Liabilities Not Recorded at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets:
Cash, cash equivalents and restricted cash	$ 242,033	$ 226,518
Fees and other receivables	149,183	127,114
Investments in other loans and receivables	1,765	4,893
Liabilities:
Long-term debt	346,702	366,396
Exchangeable notes	283,462	163,360
Secured borrowing	269,706	177,554
Accrued interest receivable	18,000	14,300
Carrying Value
Assets:
Cash, cash equivalents and restricted cash	242,033	226,518
Fees and other receivables	149,184	127,114
Investments in other loans and receivables	1,765	4,893
Liabilities:
Long-term debt	314,547	321,317
Exchangeable notes	147,526	146,342
Secured borrowing	265,557	176,089
Fair Value | Level 1
Assets:
Cash, cash equivalents and restricted cash	242,033	226,518
Fees and other receivables	0	0
Investments in other loans and receivables	0	0
Liabilities:
Long-term debt	0	0
Exchangeable notes	0	0
Secured borrowing	0	0
Fair Value | Level 2
Assets:
Cash, cash equivalents and restricted cash	0	0
Fees and other receivables	78,499	63,143
Investments in other loans and receivables	0	0
Liabilities:
Long-term debt	0	0
Exchangeable notes	283,462	163,360
Secured borrowing	0	0
Fair Value | Level 3
Assets:
Cash, cash equivalents and restricted cash	0	0
Fees and other receivables	70,684	63,971
Investments in other loans and receivables	1,765	4,893
Liabilities:
Long-term debt	346,702	366,396
Exchangeable notes	0	0
Secured borrowing	$ 269,706	$ 177,554