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FAIR VALUE MEASUREMENT - Level 3 Fair Value Measurements Inputs (Details) - CONCORD ACQUISITION CORP III - Level 3 - Private Placement Warrants | Dec. 31, 2023 $ / shares Y | Dec. 31, 2022 $ / shares Y
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Common stock price |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | 10.56 | 10.19
Risk-free interest rate |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | 0.0381 | 0.0395
Expected term in years |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | Y | 5.25 | 5.36
Expected volatility |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | 0.0000 | 0.0000
Exercise price |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | 11.50 | 11.50
Warrant fair value |  |
FAIR VALUE MEASUREMENT |  |
Fair value measurement input | 0.10 | 0.07

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