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Subsequent Event	9 Months Ended
Subsequent Event	Jan. 31, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On March 3, 2017, the Company's Board of Directors approved a share repurchase program under which the Company is authorized to repurchase up to an aggregate of $300 million of the Company's outstanding common stock. The share repurchase authorization is valid for a period of two years.