VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entities
Assets Under Management	$ 16,771,000
Estimated Market Value	49,851	$ 65,781
Westwood Funds®
Variable Interest Entities
Assets Under Management	3,168,000
Estimated Market Value	6,400
Amount at Risk	6,400
Common Trust Funds
Variable Interest Entities
Assets Under Management	1,687,000
Estimated Market Value	0
Amount at Risk	0
UCITS Fund
Variable Interest Entities
Assets Under Management	317,000
Estimated Market Value	0
Amount at Risk	0
Westwood Hospitality Fund I LLC [Member]
Variable Interest Entities
Assets Under Management	10,000
Estimated Market Value	300
Amount at Risk	300
Private Equity Investments [Member]
Variable Interest Entities
Assets Under Management	0
Estimated Market Value	5,400
Amount at Risk	5,400
Wealth Management
Variable Interest Entities
Assets Under Management	2,671,000
Institutional
Variable Interest Entities
Assets Under Management	$ 8,918,000