ORGANIZATION, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, New Accounting Standards (Details)	Jul. 31, 2019 USD ($)
Accounting Standards Update 2016-01 [Member] \| Cumulative Distributions in Excess of Net Income [Member]
New Accounting Standards [Abstract]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (569,000)

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

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