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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Investments in securities: |  |  |  |
Investments in trading securities | $ 20,667 |  | $ 32,674 |
Total assets measured at fair value | 20,908 |  | 32,915 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance |  | $ 2,792 |  |
Unrealized gains (losses) on private investments |  | 0 |  |
Ending balance |  | 2,792 |  |
Fair Value Inputs [Abstract] (Deprecated 2018-01-31) |  |  |  |
Long-term Investments | 7,247 |  | 7,247 |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 7,184 | 11,841 | 10,133 | $ 12,901
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | $ (2,949) | $ (1,060) |  |
Unobservable input - revenue retention discount rate - maximum | true | true |  |
Unobservable input - revenue retention discount rate - weighted average | true | true |  |
Unobservable input - revenue retention discount rate - minimum | true | true |  |
Unobservable input - revenue retention volatility - weighted average | true | true |  |
Unobservable input - revenue retention volatility - maximum | true | true |  |
Unobservable input - revenue retention volatility - minimum | true | true |  |
Unobservable input - growth discount rate - weighted average | true | true |  |
Unobservable input - growth discount rate - maximum | true | true |  |
Unobservable input - growth discount rate - minimum | true | true |  |
Unobservable input - growth volatility - weighted average | true | true |  |
Unobservable input - growth volatility - maximum | true | true |  |
Unobservable input - growth volatility - minimum | true | true |  |
Asset Acquisition, Consideration Transferred, Contingent Consideration | $ 7,200 |  |  |
Level 1 |  |  |  |
Investments in securities: |  |  |  |
Investments in trading securities | 20,667 |  | 32,674 |
Total assets measured at fair value | 20,667 |  | 32,674 |
Level 2 |  |  |  |
Investments in securities: |  |  |  |
Investments in trading securities | 0 |  | 0 |
Total assets measured at fair value | 0 |  | 0 |
Level 3 |  |  |  |
Investments in securities: |  |  |  |
Investments in trading securities | 0 |  | 0 |
Total assets measured at fair value | $ 0 |  | $ 0 |
Asset Acquisition, Consideration Transferred, Contingent Consideration | Level 3 |  | Level 3 |
Other Liabilities, Fair Value Disclosure | $ 7,184 |  | $ 10,133 |
Investments Measured at NAV |  |  |  |
Investments in securities: |  |  |  |
Investments in trading securities | 0 |  | 0 |
Total assets measured at fair value | $ 241 |  | $ 241 |
Fair Value, Recurring |  |  |  |
Investments in securities: |  |  |  |
Asset Acquisition, Consideration Transferred, Contingent Consideration | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] |  | Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] |
Private investment fund |  |  |  |
Investments in securities: |  |  |  |
Private | $ 241 |  | $ 241 |
Private investment fund | Level 1 |  |  |  |
Investments in securities: |  |  |  |
Private | 0 |  | 0 |
Private investment fund | Level 2 |  |  |  |
Investments in securities: |  |  |  |
Private | 0 |  | 0 |
Private investment fund | Level 3 |  |  |  |
Investments in securities: |  |  |  |
Private | 0 |  | 0 |
Private investment fund | Investments Measured at NAV |  |  |  |
Investments in securities: |  |  |  |
Private | $ 241 |  | $ 241 |

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