SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and cash equivalents	$ 39,591	$ 62,100
Restricted cash	45,375	22,925
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows	$ 84,966	$ 85,025	$ 80,653	$ 45,129