Subsequent Events (Details) - Amendment No. 21 To Credit Facility [Member] - Subsequent Event $ in Thousands	Sep. 08, 2020 USD ($)
Subsequent Event [Line Items]
Non-refundable fee	$ 75
Consecutive Four Fiscal Quarters Ending July 31, 2020
Subsequent Event [Line Items]
Maximum fixed charge coverage ratio	1.10
Consecutive Four Fiscal Quarters Ending October 31, 2020
Subsequent Event [Line Items]
Maximum fixed charge coverage ratio	1.00
Consecutive Four Fiscal Quarters Ending Thereafter
Subsequent Event [Line Items]
Maximum fixed charge coverage ratio	1.10