Presentation of Financial Statements - Narrative (Details)	Jul. 31, 2020 state store people
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of stores \| store	2,214
Number of states in which entity operates \| state	16
Population of communities \| people	5,000

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant