Equity and Equity Compensation Plans - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Number Of Options
Outstanding, beginning balance (in shares)	7,792,181
Options exercised (in shares)	(738,398)
Options forfeited (in shares)	(20,798)
Options canceled (in shares)	(4,266)
Outstanding, ending balance (in shares)	7,028,719	7,792,181
Options exercisable at period end (in shares)	6,472,555
Weighted- Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 7.00
Options exercised (in dollars per share)	5.30
Options forfeited (in dollars per share)	9.01
Options canceled (in dollars per share)	10.80
Outstanding, ending balance (in dollars per share)	7.17	$ 7.00
Options exercisable at period end (in dollars per share)	$ 6.54
Weighted-Average Remaining Contractual Life (Years)
Weighted average remaining contractual life outstanding	5 years 1 month 13 days	5 years 3 months 10 days
Weighted average remaining contractual life exercisable	4 years 11 months 4 days
Aggregate Intrinsic Value
Options outstanding, Aggregate intrinsic value	$ 59,786	$ 111,122
Options exercisable, Aggregate intrinsic value	$ 57,443