Summary of Significant Accounting Policies - Schedule of Other Accrued Expenses (Details) - USD ($) $ in Thousands	Oct. 27, 2017	Apr. 28, 2017
Accounting Policies [Abstract]
Legal and professional fees	$ 7,485	$ 10,807
Accrued customer incentives	2,852	1,912
Accrued advertising	1,292	515
Accrued broker fees	1,112	945
Other	5,419	3,726
Total other accrued expenses	$ 18,160	$ 17,905