XML 16 R61.htm IDEA: XBRL DOCUMENT v3.19.2

Note 15 - Concentration of Credit Risk (Details Textual) - USD ($)	Jul. 31, 2019	Jul. 31, 2018
Cash, Uninsured Amount	$ 737,000	$ 899,000

X

- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

Name:	us-gaap_CashUninsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant