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FAIR VALUE MEASUREMENTS (Fair Value of Marketable Securities) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Fair Value Measurements |  |
Estimated fair value of marketable securities | $ 62,605 | $ 59,508
Fair value, inputs, Level 1 [Member] |  |
Fair Value Measurements |  |
Estimated fair value of marketable securities | $ 62,605 | $ 59,508

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