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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 394,898	$ 377,240	$ 379,421
Acquisition of business	0	16,729	0
Foreign currency translation adjustments	(1,323)	929	(2,181)
Ending balance	393,575	394,898	377,240
Financial Advisory
Goodwill [Roll Forward]
Beginning balance	313,628	312,699	314,880
Acquisition of business	0	0	0
Foreign currency translation adjustments	(1,323)	929	(2,181)
Ending balance	312,305	313,628	312,699
Asset Management
Goodwill [Roll Forward]
Beginning balance	81,270	64,541	64,541
Acquisition of business	0	16,729	0
Foreign currency translation adjustments	0	0	0
Ending balance	$ 81,270	$ 81,270	$ 64,541

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

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Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit 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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