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FAIR VALUE MEASUREMENTS (Tables) | 6 Months Ended
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Jun. 30, 2025
FAIR VALUE MEASUREMENTS |
Schedule of Fair value of cash equivalents and marketable securities | The fair-value hierarchy of the Company’s cash equivalents and marketable securities at June 30, 2025 and December 31, 2024, was as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurement at
​ | ​ | June 30, 2025
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs
(In thousands) | ​ | Total Fair Value | ​ | (Level 1) | ​ | (Level 2)
Commercial paper | ​ | $ | 8,206 | ​ | $ | — | ​ | $ | 8,206
Corporate securities | ​ | ​ | 201,801 | ​ | ​ | — | ​ | ​ | 201,801
Money market funds | ​ |  | 989 | ​ |  | 989 | ​ |  | —
Total | ​ | $ | 210,996 | ​ | $ | 989 | ​ | $ | 210,007
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurement at
​ | ​ | December 31, 2024
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets for | ​ | Significant Other
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Observable Inputs
(In thousands) | ​ | Total Fair Value | ​ | (Level 1) | ​ | (Level 2)
Commercial paper | ​ | $ | 2,048 | ​ | $ | — | ​ | $ | 2,048
Corporate securities | ​ | ​ | 249,023 | ​ | ​ | — | ​ | ​ | 249,023
Money market funds | ​ |  | 567 | ​ |  | 567 | ​ |  | —
U.S. government securities | ​ | ​ | 750 | ​ | ​ | — | ​ | ​ | 750
Total | ​ | $ | 252,388 | ​ | $ | 567 | ​ | $ | 251,821

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