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Basis of Presentation (Details) $ in Thousands		3 Months Ended
	Dec. 11, 2020 USD ($)	Apr. 30, 2020 USD ($)	Apr. 30, 2021	Sep. 08, 2020	Feb. 01, 2020
Cost of revenue		$ 218
Amendment No. 20 To Credit Facility [Member]
Maximum fixed charge coverage ratio					1.10
Amendment No. 22 To Credit Facility [Member]
Minimum coverage ratio	1.10
Amendment No. 22 To Credit Facility [Member] | Maximum
Covenant compliance, adjusted EBITDA	$ 2,000
Consecutive Four Fiscal Quarters Ending Thereafter | Amendment No. 20 To Credit Facility [Member]
Maximum fixed charge coverage ratio			1.10
Consecutive Four Fiscal Quarters Ending Thereafter | Amendment No. 21 To Credit Facility [Member]
Maximum fixed charge coverage ratio			1.00	1.10

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