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FAIR VALUE MEASUREMENTS - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term U.S. Government bonds	$ 419,673	$ 377,034
Short-term U.S. Government bonds	3,053
Cash equivalents	159,352	138,353
Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term U.S. Government bonds	395,032	352,987
Short-term U.S. Government bonds	350,764	455,398
Cash equivalents	1,187	27,461
Short-term Marketable securities	6,292	8,606
Convertible notes	2,000	2,000
Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible notes	2,000	2,000
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term U.S. Government bonds	395,032	352,987
Short-term U.S. Government bonds	350,764	455,398
Cash equivalents	1,187	27,461
Short-term Marketable securities	$ 6,292	$ 8,606

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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