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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency
Income tax expense (benefit)	$ 1.7	$ (2.0)
Effective income tax rate (percent)	16.70%	200.00%
Liability for gross unrecognized tax benefits	$ 2.5			$ 2.4
Unrecognized tax benefit that would impact effective tax rate	$ 1.8			$ 1.8
Forecast
Income Tax Contingency
Effective income tax rate (percent)			20.00%

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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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