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FAIR VALUE OF FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements within the Fair Value Hierarchy (Details) - Fair value measurements on recurring basis - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | $ 363,612 | $ 413,331
Short-Term Investments | 7,500 | 7,500
Other Current Assets | 17,294 | 16,359
Total assets | 388,406 | 437,190
Cash |  |
Fair value of assets and liabilities |  |
Other Current Assets | 0 | 0
Cash |  |
Fair value of assets and liabilities |  |
Short-Term Investments | 0 | 0
Cash |  |
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | 34,442 | 25,402
Total assets | 34,442 | 25,402
Level 1: | Money market funds |  |
Fair value of assets and liabilities |  |
Other Current Assets | 0 | 0
Level 1: | Assets of non-qualified retirement plan |  |
Fair value of assets and liabilities |  |
Other Current Assets | 16,708 | 15,913
Level 1: | Certificates of deposit |  |
Fair value of assets and liabilities |  |
Other Current Assets | 0 | 0
Level 1: | Equity securities |  |
Fair value of assets and liabilities |  |
Other Current Assets | 586 | 446
Level 1: | Money market funds |  |
Fair value of assets and liabilities |  |
Short-Term Investments | 0 | 0
Level 1: | Assets of non-qualified retirement plan |  |
Fair value of assets and liabilities |  |
Short-Term Investments | 0 | 0
Level 1: | Certificates of deposit |  |
Fair value of assets and liabilities |  |
Short-Term Investments | 7,500 | 7,500
Level 1: | Equity securities |  |
Fair value of assets and liabilities |  |
Short-Term Investments | 0 | 0
Level 1: | Money market funds |  |
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | 329,170 | 387,929
Total assets | 329,170 | 387,929
Level 1: | Assets of non-qualified retirement plan |  |
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | 0 | 0
Total assets | 16,708 | 15,913
Level 1: | Certificates of deposit |  |
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | 0 | 0
Total assets | 7,500 | 7,500
Level 1: | Equity securities |  |
Fair value of assets and liabilities |  |
Cash and Cash Equivalents | 0 | 0
Total assets | $ 586 | $ 446

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