VARIABLE INTEREST ENTITIES - VIEs Not Consolidated (Details) - Unconsolidated VIEs - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 820,828	$ 780,614
Corporate investments
Variable Interest Entity [Line Items]
Variable interests	818,387	693,090
Due from affiliates
Variable Interest Entity [Line Items]
Variable interests	$ 2,441	$ 87,524

Amount of net assets (liabilities).

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