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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
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Goodwill and Intangible Assets Disclosure [Abstract] |  |
Goodwill | $ 1,292,121 | $ 1,284,589
Tradename-Houlihan Lokey | 192,210 | 192,210
Other intangible assets | 134,589 | 133,785
Total cost | 1,618,920 | 1,610,584
Less: accumulated amortization | (125,918) | (113,325)
Goodwill and Other intangible assets, net | $ 1,493,002 | $ 1,497,259

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