GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 1,280,304	$ 1,127,497
Tradename-Houlihan Lokey	192,210	192,210
Other intangible assets	133,178	98,897
Total cost	1,605,692	1,418,604
Less: accumulated amortization	(103,275)	(93,668)
Goodwill and other intangibles, net	$ 1,502,417	$ 1,324,936

Intangible Assets, Gross (Including Goodwill)

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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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Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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Amount before accumulated amortization of finite-lived intangible assets classified as other.

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