Shareholders' Equity - Schedule of Stock by Class (Details) - shares	Apr. 30, 2016	May 02, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Authorized (in shares)	100,000,000	100,000,000
Issued and outstanding (in shares)	38,181,985	39,702,036
In treasury (in shares)	1,346,624	1,346,624