Variable Interest Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entities
Assets Under Management	$ 16,607,000
Corporate Investment	25,748	$ 32,674
Fee revenues from Westwood VIEs	33,000	$ 32,400	$ 23,200
Westwood Funds
Variable Interest Entities
Assets Under Management	3,915,000
Corporate Investment	0
Amount at Risk	0
Common Trust Funds
Variable Interest Entities
Assets Under Management	739,000
Corporate Investment	0
Amount at Risk	0
Westwood Hospitality Fund I LLC [Member]
Variable Interest Entities
Assets Under Management	92,000
Corporate Investment	300
Amount at Risk	300
Private Equity Investments [Member]
Variable Interest Entities
Assets Under Management	0
Corporate Investment	7,300
Amount at Risk	7,300
Wealth Management
Variable Interest Entities
Assets Under Management	3,327,000
Institutional
Variable Interest Entities
Assets Under Management	$ 8,534,000