Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Research and development tax credits utilized	$ 2.2
Tax credit carryforwards subject to expiration	1.8
Change in net deferred tax assets	1.5
Goodwill purchase accounting adjustments	7.3
Tax effect of unrealized loss on investments	0.5
Deferred tax expense	4.9
Convertible debt adjustments	1.1
Valuation allowance amount	69.9	$ 55.5
Unrecognized tax benefits that would impact effective tax rate	$ 29.5	$ 23.5	$ 0.0
Possible extension period of tax holiday	3 years
Undistributed foreign earnings	$ 15.3
California and Foreign
Operating Loss Carryforwards [Line Items]
Valuation allowance amount	$ 69.9