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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Current Liabilities and Other Long Term Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Other current liabilities |  |
Customer advances and unearned income | $ 2,798 | $ 2,200
Unearned event income | 6,937 | 1,152
Professional fee accrual | 1,164 | 3,781
Operating expense accruals | 5,139 | 2,512
Employment Agreement Award (as defined in Note 5) | 2,710 | 3,044
Other | 4,662 | 7,697
Total other current liabilities | 23,410 | 20,386
Other long-term liabilities |  |
Employment Agreement Award (as defined in Note 5) | 6,592 | 7,382
Reserve for uncertain tax position | 1,829 | 1,829
Other | 1,230 | 3,577
Total long-term liabilities | $ 9,651 | $ 12,788

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