Variable Interest Entities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Variable Interest Entity [Line Items]
Net income (loss)	$ (7,615)	$ (2,306)	$ (10,767)	$ 4,477
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Revenues	180	3,300	583	11,100
Net income (loss)	$ 159	$ 2,400	$ 498	$ 7,100