Equity-based Compensation - Summary of Equity-based Compensation Cost Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation	$ 11,521	$ 681	$ 22,123	$ 1,947
QLH Class B units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation	0	681	0	1,947
QLH restricted Class B-1 units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation	140	0	265	0
Restricted Class A shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation	285	0	552	0
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation	$ 11,096	$ 0	$ 21,306	$ 0