Stock Compensation - Option activity (Details) - Employee Stock Option	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Shares Subject to Outstanding Options, Shares
Outstanding at the beginning of the period (in shares) | shares	12,763,460
Options granted (in shares) | shares	1,088,674
Options exercised (in shares) | shares	(240,894)
Options cancelled (in shares) | shares	(433,634)
Outstanding at the end of the period (in shares) | shares	13,177,606
Shares Subject to Outstanding Options, Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 88.39
Options granted (in dollars per share) | $ / shares	74.67
Options exercised (in dollars per share) | $ / shares	68.07
Options cancelled (in dollars per share) | $ / shares	84.35
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 87.76
Termination period	10 years
Vesting period	4 years
Vesting Percentage	25.00%
Tranche One
Shares Subject to Outstanding Options, Weighted Average Exercise Price
Vesting period	1 year
Tranche Two
Shares Subject to Outstanding Options, Weighted Average Exercise Price
Vesting period	36 months