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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Tax [Line Items]
Net deferred income tax assets	$ 45.0		$ 45.0		$ 45.0
Effective tax rate increased	0.30%	132.50%		7.10%
Decrease in effective tax rate			0.80%
Income tax rate non deductible legal settlement		$ 2.4		$ 2.4
Decrease in unrecognized tax positions	$ 1.4		$ 1.4
Interest and penalties	$ 1.7		$ 1.7
Florida [Member]
Income Tax [Line Items]
Increase in tax expense (benefit)		$ (0.5)		$ (0.5)
Decrease in effective tax rate due to settlement of a state income tax audit, percentage		28.20%		1.50%

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Deferred tax assets valuation allowance related to foreign tax credits, state net operating 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 discreet tax items.

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Income tax.

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State audit change in tax rate income 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 changes in the income tax rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
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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 state and local income tax settlement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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