Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 4.3	$ 7.6	$ 17.3	$ 20.9
Excess tax benefit from stock compensation activity	$ (1.2)		$ 0.5
Effective tax rate	12.80%	23.10%	17.60%	23.00%
Tax Benefit from Remeasurement of Deferred Taxes for Changes in State Tax Apportionment	$ 1.1		$ 1.1
Valuation Allowance [Line Items]
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 3.4		$ 3.4

Tax Benefit From Remeasurement Of Deferred Taxes For Changes in State Tax Apportionment

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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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Amount of tax benefit from exercise of option under share-based payment arrangement.

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

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment 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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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