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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

Income (loss) before the provision for (benefit from) income taxes consisted of the following:

(in millions)
Year Ended December 31,						2022						2021						2020
Domestic						$	(16.3)					$	(35.0)					$	1.9
Foreign						(3.7)						(2.7)						(1.0)
Total						$	(20.0)					$	(37.7)					$	0.9

Schedule of Components of Income Tax Expense (Benefit)

The components of the provision for (benefit from) income taxes are as follows:

(in millions)
Year Ended December 31,						2022						2021						2020
Current:
Federal						$	2.0					$	—					$	(0.1)
State						1.9						0.7						0.3
Foreign						0.1						—						—
Total						4.0						0.7						0.2
Deferred:
Federal						(12.3)						4.9						(4.0)
State						(1.6)						(0.2)						(0.6)
Foreign						0.1						(0.6)						—
Total						(13.8)						4.1						(4.6)
Provision for (benefit from) income taxes						$	(9.8)					$	4.8					$	(4.4)

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the statutory federal income tax rate to the Company’s effective tax rate is as follows:

(in millions)
Year Ended December 31,						2022						2021						2020
Tax at federal statutory rate						$	(4.2)					$	(7.9)					$	0.4
Permanent items						0.3						—						0.5
Foreign rate differential						0.9						(0.2)						0.2
Stock-based compensation						1.0						(2.0)						(3.1)
Tax credits						(6.1)						(5.6)						(4.9)
Change in valuation allowance						(3.7)						15.1						1.1
Tax contingency and interest						1.3						1.9						1.1
State taxes						(0.7)						(0.4)						0.1
Non-deductible contingent consideration						1.4						4.1						—
Other						—						(0.2)						0.2
Tax at effective tax rate						$	(9.8)					$	4.8					$	(4.4)

Schedule of Deferred Tax Assets and Liabilities

The Company’s deferred tax assets and liabilities are as follows:

(in millions)
As of December 31,						2022						2021
Deferred tax assets:
Accruals and reserves						$	2.1					$	0.6
Federal and state tax credits						14.0						17.9
Stock-based compensation						3.9						3.3
Capitalized research and development expenses						22.2						—
Net operating loss carryforwards						4.1						13.5
Lease liabilities						3.1						3.7
Other						0.1						1.2
Total gross deferred tax assets						49.5						40.2
Deferred tax liabilities:
Prepaid expense and other						(0.6)						(1.3)
Right-of-use assets						(2.8)						(3.4)
Basis difference for fixed assets and intangibles						(28.0)						(14.8)
Total gross deferred tax liabilities						(31.4)						(19.6)
Valuation allowance for deferred tax assets						(19.3)						(22.4)
Net deferred tax liability						$	(1.2)					$	(1.8)

Schedule of Unrecognized Tax Benefits

A reconciliation of unrecognized tax benefits, excluding accrued interest and penalties, are as follows:

(in millions)
Year Ended December 31,						2022						2021						2020
Balance as of beginning of year						$	8.4					$	6.3					$	4.8
Increases related to prior year tax positions						—						0.6						0.3
Decreases related to prior year tax positions						(0.2)						—						(0.1)
Expiration of statute of limitations						—						—						(0.1)
Current year increases						1.7						1.5						1.4
Balance as of end of year						$	9.9					$	8.4					$	6.3

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure of the change in unrecognized tax benefits.

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