Tax Receivable Agreement (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax receivable agreement, percentage of income taxes			90.00%
Liability for tax receivable agreement			$ 89,500		$ 117,400
Reduction in tax receivable agreement liability	$ 27,900	$ 16,700	$ 27,850	$ 16,667