Business, Basis of Presentation and Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		12 Months Ended
	May 01, 2019	Apr. 30, 2020
Adoption of new accounting pronouncement
Operating lease right-of-use assets		$ 115,257
Operating lease liability		122,645
Operating lease right-of-use assets obtained in exchange for lease obligations		$ 38,143
Adjustment | ASU 2016-02
Adoption of new accounting pronouncement
Operating lease right-of-use assets	$ 118,800
Operating lease liability	118,800
Operating lease right-of-use assets obtained in exchange for lease obligations	$ 4,800