Equity and Equity Compensation Plans - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number Of Options
Beginning balance (in shares)	9,435,349
Options granted (in shares)	150,000	0
Options exercised (in shares)	(1,666,162)
Options forfeited (in shares)	(116,398)
Options canceled (in shares)	(10,608)
Ending balance (in shares)	7,792,181	9,435,349
Options exercisable at December 31, 2018 (in shares)	7,043,042
Weighted- Average Exercise Price
Beginning balance (in dollars per share)	$ 6.48
Options granted (in dollars per share)	27.50
Options exercised (in dollars per share)	5.74
Options forfeited (in dollars per share)	9.16
Options, canceled (in dollars per share)	8.75
Ending balance (in dollars per share)	7.00	$ 6.48
Options exercisable at December 31, 2018 (in dollars per share)	$ 6.35
Stock Option Activity, Additional Disclosures
Weighted average remaining contractual life outstanding	5 years 3 months 10 days	6 years 21 days
Weighted average remaining contractual life exercisable	5 years 18 days
Options outstanding, Aggregate intrinsic value	$ 111,122	$ 74,669
Options exercisable, Aggregate intrinsic value	$ 104,141