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GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill by Business Segments (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill
April 1, 2024	$ 1,127,497
Changes	157,092
March 31, 2024	1,284,589
Corporate Finance (1)
Goodwill
April 1, 2024	872,967
Changes	145,016
March 31, 2024	1,017,983
Financial Restructuring
Goodwill
April 1, 2024	162,815
Changes	0
March 31, 2024	162,815
Financial and Valuation Advisory (2)
Goodwill
April 1, 2024	91,715
Changes	12,076
March 31, 2024	$ 103,791

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of increase (decrease) of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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