Income Taxes - Differences Between Federal and Effective Tax Rate (Details)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	21.00%	21.00%	21.00%
State and local taxes	2.60%	10.80%	4.80%
Research and development tax credit	4.50%	11.10%	3.10%
Stock-based compensation	49.50%	34.40%	19.00%
Uncertain tax positions	(0.10%)	0.10%	(0.50%)
Foreign tax rate differential	(1.20%)	(10.60%)	(7.90%)
Change in valuation allowance	(55.70%)	(81.20%)	(40.80%)
Gain on intercompany sale	(5.10%)	0.00%	(12.30%)
Foreign withholding tax	(2.00%)	(3.30%)	(1.40%)
Transaction costs	(1.60%)	0.00%	0.00%
Other	(4.10%)	2.40%	(0.60%)
Effective tax rate	7.80%	(15.30%)	(15.60%)

Effective Income Tax Rate Reconciliation, Foreign Tax Withholding, Percent

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Effective Income Tax Rate Reconciliation, Transaction Costs

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to disposition of asset. Includes, but is not limited to, intra-entity transfer of asset other than inventory.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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