Stock Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock compensation
Weighted-average grant-date fair value (in dollars per share)	$ 19.19	$ 43.22	$ 31.18
Unrecognized stock-based compensation expense, options	$ 11.8
Stock Options
Stock compensation
Stock-based compensation expense	14.6	$ 20.9	$ 23.5
Stock-based compensation expense capitalized into inventory	$ 1.5	0.6
Weighted-average period over which remaining unrecognized compensation cost will be recognized	2 years 7 months 6 days
RSUs
Stock compensation
Stock-based compensation expense	$ 8.1	7.0	$ 2.4
Stock-based compensation expense capitalized into inventory	$ 0.7	$ 0.2
Weighted-average period over which remaining unrecognized compensation cost will be recognized	2 years 9 months 18 days
Unrecognized stock-based compensation expense	$ 16.6
PBSOs
Stock compensation
Weighted-average grant-date fair value (in dollars per share)	$ 6.04
Stock-based compensation expense	$ 0.1
Unrecognized stock-based compensation expense, options	$ 0.7
Weighted-average period over which remaining unrecognized compensation cost will be recognized	1 year 10 months 24 days

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