MARKETABLE SECURITIES (Schedule of classified marketable securities) (Details) - USD ($)	Jul. 31, 2019	Jul. 31, 2018
Fair Value	$ 3,580,227	$ 3,141,828
Noncurrent [Member]
Fair Value	3,580,227	3,141,828
Gross Unrealized Gains	1,078,765	800,137
Gross Unrealized Losses
Cost	2,501,462	2,341,691
Noncurrent [Member] \| Mutual Fund [Member]
Fair Value	1,109,731	1,011,751
Gross Unrealized Gains	264,425	237,149
Gross Unrealized Losses
Cost	845,306	774,602
Noncurrent [Member] \| Corporate Equity Securities [Member]
Fair Value	2,470,496	2,130,077
Gross Unrealized Gains	814,340	562,988
Gross Unrealized Losses
Cost	$ 1,656,156	$ 1,567,089

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

No definition available.

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

+ Details

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