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GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill by Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2022
Goodwill
April 1, 2021		$ 671,065
Changes		399,377
March 31, 2021	$ 1,070,442	1,070,442
Corporate Finance
Goodwill
April 1, 2021		416,535
Changes	399,377
March 31, 2021	815,912	815,912
Financial Restructuring
Goodwill
April 1, 2021		162,815
Changes	0
March 31, 2021	162,815	162,815
Financial and Valuation Advisory
Goodwill
April 1, 2021		91,715
Changes	0
March 31, 2021	$ 91,715	$ 91,715

X

- Definition

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.

+ References

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-Publisher FASB
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- Definition

Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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