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FAIR VALUE MEASUREMENTS AND INVESTMENTS - Recurring (Details) - Recurring basis - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Fair value measurements |  |
Total assets and liabilities measured at fair value | $ (36,102) | $ (36,055)
Short Term Investments |  |
Fair value measurements |  |
Investments | 300 | 300
Other investments |  |
Fair value measurements |  |
Investments | 1,278 | 1,616
Redeemable common units |  |
Fair value measurements |  |
Financial instruments | (22,266) | (22,557)
Redeemable common units | Alloy Inc |  |
Fair value measurements |  |
Financial instruments | (14,760) | (14,760)
Warrant |  |
Fair value measurements |  |
Financial instruments | (654) | (654)
Level 1 |  |
Fair value measurements |  |
Total assets and liabilities measured at fair value | 300 | 300
Level 1 | Short Term Investments |  |
Fair value measurements |  |
Investments | 300 | 300
Level 3 |  |
Fair value measurements |  |
Total assets and liabilities measured at fair value | (36,402) | (36,355)
Level 3 | Other investments |  |
Fair value measurements |  |
Investments | 1,278 | 1,616
Level 3 | Redeemable common units |  |
Fair value measurements |  |
Financial instruments | (22,266) | (22,557)
Level 3 | Redeemable common units | Alloy Inc |  |
Fair value measurements |  |
Financial instruments | (14,760) | (14,760)
Level 3 | Warrant |  |
Fair value measurements |  |
Financial instruments | $ (654) | $ (654)

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