Stockholders' Equity - Summary of Stock Option Activity and Weighted Average Exercise Prices (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Number Of Options Outstanding
Beginning balance (in shares)	27,068,323
Options granted (in shares)	0
Options exercised (in shares)	(1,320,113)
Options forfeited or expired (in shares)	(96,151)
Ending balance (in shares)	25,652,059	27,068,323
Exercisable (in shares)	16,917,990
Weighted- Average Exercise Price
Beginning balance (in dollars per share)	$ 3.31
Options granted (in dollars per share)	0
Options exercised (in dollars per share)	2.49
Options forfeited or expired (in dollars per share)	4.86
Ending balance (in dollars per share)	3.34	$ 3.31
Exercisable (in dollars per share)	$ 1.58
Weighted-average remaining contractual life (in years)	6 years 4 months 24 days	6 years 8 months 12 days
Exercisable (in years)	5 years 8 months 12 days
Aggregate intrinsic value	$ 2,052,059	$ 2,575,069