Revenue - Contract Assets and Liabilities (Details) - USD ($)	12 Months Ended
	May 01, 2021	May 02, 2020
Contract With Customer Asset And Liability [Abstract]
Unbilled receivables	$ 600,000	$ 500,000
Unbilled receivables recorded into accounts receivable	(500,000)
Impairment of contract assets	0
Deferred revenue	300,000	$ 300,000
Deferred revenue recorded into revenue	$ (100,000)