Share Option Plans and ESPP - Schedule of Stock Option Plan (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of options
Number of options, beginning outstanding (in shares) | shares	9,220,326
Number of options, granted (in shares) | shares	375,689
Number of options, exercised (in shares) | shares	(404,591)
Number of options, forfeited and canceled (in shares) | shares	(20,911)
Number of options, ending outstanding (in shares) | shares	9,170,513
Number of options, exercisable options (in shares) | shares	5,344,848
Weighted average exercise price
Weighted average exercise price, beginning outstanding (in usd per share) | $ / shares	$ 26.21
Weighted average exercise price, granted (in usd per share) | $ / shares	153.09
Weighted average exercise price, exercised (in usd per share) | $ / shares	19.36
Weighted average exercise price, forfeited and canceled (in usd per share) | $ / shares	62.86
Weighted average exercise price, ending outstanding (in usd per share) | $ / shares	31.63
Weighted average exercise price, exercisable options (in usd per share) | $ / shares	$ 18.59