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v3.19.2

Basis of Presentation (Details) $ in Millions | 3 Months Ended
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Jul. 31, 2018 USD ($)
Reclassification for Costs to Fulfill Contract and Product Development Spending [Member] |
Prior Period Adjustments [Abstract] |
Prior period reclassification adjustment | $ 4.5
Reclassification for Amortization Expense Related to Costs to Fulfill Contract [Member] |
Prior Period Adjustments [Abstract] |
Prior period reclassification adjustment | $ 0.8

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