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Changes In Restructuring Liability (Detail) $ in Thousands	3 Months Ended
	Jul. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Liability, Beginning period	$ 5,962
Restructuring charges, net	24,520
Reductions for cash payments	(6,575)
Reductions for non-cash charges	(2,480)
Exchange rate fluctuations	(177)
Liability, Ending period	21,250
Severance
Restructuring Cost and Reserve [Line Items]
Liability, Beginning period	5,293
Restructuring charges, net	11,472
Reductions for cash payments	(4,788)
Exchange rate fluctuations	(111)
Liability, Ending period	11,866
Facilities
Restructuring Cost and Reserve [Line Items]
Liability, Beginning period	669
Restructuring charges, net	13,048
Reductions for cash payments	(1,787)
Reductions for non-cash charges	(2,480)
Exchange rate fluctuations	(66)
Liability, Ending period	$ 9,384

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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