New Accounting Pronouncements (Details) $ in Thousands	6 Months Ended
Jul. 31, 2020 USD ($)
COVID-19 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction In Variable Lease Expense	$ 136

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration