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v3.19.1

Business and Basis of Presentation - Additional Information (Detail) $ in Millions | 3 Months Ended
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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

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- Definition Organization consolidation and presentation of financial statements. + References No definition available. + Details
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- 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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- Details
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- Details
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