Share-Based Compensation - Summary of Restricted Stock Unit Activity (Details) - Incentive Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Incentive Units
Beginning balance (in shares)	3,272	2,918
Granted (in shares)		354
Vested (in shares)	(3,060)	0
Ending balance (in shares)	212	3,272
Grant-date Fair Value
Beginning balance (in dollars per share)	$ 1.49	$ 0.45
Grant-date fair value, Granted (in dollars per share)		10.04
Grant-date fair value, Vested (in dollars per share)	0.89	0.00
Ending balance (in dollars per share)	$ 10.04	$ 1.49