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VARIABLE INTEREST ENTITIES (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Variable Interest Entity [Line Items]          
Estimated Fair Value $ 55,855   $ 55,855   $ 69,537
Fee revenues from Westwood VIEs 5,100 $ 5,400 10,800 $ 10,300  
Common Trust Funds          
Variable Interest Entity [Line Items]          
Estimated Fair Value $ 0   $ 0