FAIR VALUE MEASUREMENT - Schedule of Assets Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
Cash, cash equivalents and restricted cash	$ 181,047	$ 222,541
Fees and other receivables	129,063	113,707
Total assets	310,110	336,248
Carrying Value
Assets
Cash, cash equivalents and restricted cash	181,047	222,541
Fees and other receivables	129,063	113,707
Total assets	310,110	336,248
Fair Value | Level 1
Assets
Cash, cash equivalents and restricted cash	181,047	222,541
Fees and other receivables	0	0
Total assets	181,047	222,541
Fair Value | Level 2
Assets
Cash, cash equivalents and restricted cash	0	0
Fees and other receivables	129,063	113,707
Total assets	129,063	113,707
Fair Value | Level 3
Assets
Cash, cash equivalents and restricted cash	0	0
Fees and other receivables	0	0
Total assets	$ 0	$ 0