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Business and Basis of Presentation - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019 Segment	Mar. 31, 2018 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number Of Reporting Units | Segment	2
General and Administrative Expenses [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Prior period reclassification adjustment		$ (0.1)
Acquisition Related Amortization and Remeasurement Expense [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Prior period reclassification adjustment		$ 0.1

X

- Definition

Organization consolidation and presentation of financial statements.

+ References

No definition available.

+ Details

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X

- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

+ Details

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X

- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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