Tax Receivable Agreement (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2019	Sep. 30, 2020	Jul. 31, 2020
Tax Receivable Agreement
Tax savings payable to TRA Holders (as a percent)	85.00%
Tax savings benefit recorded as APIC (as a percent)	15.00%
TRA payment				$ 14,200
Tax benefit		$ 16,700
Total TRA liability			$ 203,500
Current portion of liability related to tax receivable agreement		$ 14,630	$ 8,902