Employee Benefit Plans - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Number of Shares
Outstanding, vested and expected to vest, Beginning balance	15,100,142
Granted	2,472,878
Exercised	(641,252)
Forfeited	(641,986)
Expired	(12,117)
Outstanding, vested and expected to vest, Ending balance	16,277,665	15,100,142
Vested and exercisable at March 31, 2021	10,607,672
Weighted Average Exercise Price
Outstanding, vested and expected to vest, Beginning balance	$ 16.07
Granted	21.99
Exercised	14.93
Forfeited	19.50
Expired	13.91
Outstanding, vested and expected to vest, Ending balance	16.88	$ 16.07
Vested and exercisable at March 31, 2021	$ 15.46
Outstanding, vested and expected to vest, Aggregate Intrinsic Value, Beginning balance	$ 39,588	$ 143,156
Vested and exercisable at March 31, 2021	$ 32,604
Outstanding, vested and expected to vest, Weighted Average Remaining Contractual Term	7 years	6 years 10 months 24 days
Vested and exercisable, Weighted Average Remaining Contractual Term	5 years 10 months 24 days