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MARKETABLE INVESTMENT SECURITIES - Narrative (Details) $ in Millions | 3 Months Ended
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Jun. 30, 2026 USD ($)
Investments, Debt and Equity Securities [Abstract] |
Sales of available-for-sale debt securities | $ 150.0
Available-for-sale debt securities, current | 249.6
Accrued interest receivable related to available-for-sale debt securities | $ 1.8
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Prepaid expenses and other current assets

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