Basis of Presentation (Details)		3 Months Ended	6 Months Ended
	Dec. 11, 2020 USD ($)	Jul. 31, 2020 USD ($)	Jul. 31, 2020 USD ($)	Oct. 31, 2020	Oct. 30, 2020
Cost of revenue		$ 171,000	$ 389,000
Minimum coverage ratio	1.10
Maximum
Covenant compliance, adjusted EBITDA	$ 2,000,000
Consecutive Four Fiscal Quarters Ending Thereafter
Minimum fixed charge coverage ratio				1.00	1.10