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Variable Interest Entities - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Variable Interest Entity [Line Items]    
Net income (loss) $ 4,707 $ 9,742
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Revenues 238 4,700
Net income (loss) $ 189 $ 2,700