Income Taxes (Details) - USD ($) $ in Thousands		2 Months Ended
Mar. 27, 2020	Mar. 26, 2020	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
Income Tax Disclosure [Abstract]
Valuation allowance			$ 1,186	$ 1,183	$ 2,003
Limitation for business interest expense deduction as a percentage of adjusted taxable income	50.00%	30.00%
Income tax benefit from the CARES Act	$ 200

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant