Leases (Details) $ in Thousands	12 Months Ended
	May 02, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (years)	5 years
Weighted average discount rate (percent)	3.40%
Operating lease payments	$ 3,340
Minimum
Lessee, Lease, Description [Line Items]
Term of lease (years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of lease (years)	5 years
Cost of sales
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 2,325
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 1,116