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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
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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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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