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Schedule of Other Current Assets (Parenthetical) (Detail) - USD ($) $ in Millions	Apr. 30, 2018	Dec. 31, 2017
Scenario, Forecast | Former CEO
Payment advances of lump sum benefit	$ 9.6
Rabbi Trust
Investments liquidation value		$ 8.9

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- Definition

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- Definition

Payment advances of lump sum benefit.

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No definition available.

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