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INVESTMENTS (Composition of Investments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Schedule of Investments [Abstract]    
Equity method investments, at fair value $ 9,589 $ 11,650
Investment held at cost less impairment 48 196
Investments of consolidated fund 0 1,441
Total investments, at fair value $ 9,637 $ 13,287