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MARKETABLE SECURITIES (Tables) | 12 Months Ended
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Jul. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Schedule of Classified Marketable Securities | As of July 31, 2021 and 2020, the Company’s marketable securities were classified as follows:
| July 31, 2021 |  | July 31, 2020
|  |  | Gross |  | Gross |  |  |  |  |  | Gross |  | Gross |  |
|  |  | Unrealized |  | Unrealized |  | Fair |  |  |  | Unrealized |  | Unrealized |  | Fair
| Cost |  | Gains |  | Losses |  | Value |  | Cost |  | Gains |  | Losses |  | Value
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds | $ | 984,869 |  | $ | 619,972 |  |  | $ | — |  |  | $ | 1,604,841 |  | $ | 1,077,493 |  | $ | 297,064 |  |  | $ | — |  |  | $ | 1,374,557
Corporate equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
securities |  | 1,355,961 |  |  | 940,291 |  |  |  | — |  |  |  | 2,296,252 |  |  | 1,553,275 |  |  | 823,010 |  |  |  | 5,937 |  |  |  | 2,370,348
| $ | 2,340,830 |  | $ | 1,560,263 |  |  | $ | — |  |  | $ | 3,901,093 |  | $ | 2,630,768 |  | $ | 1,120,074 |  |  | $ | 5,937 |  |  | $ | 3,744,905
Schedule of Investment Income | Investment income for the years ended July 31, 2021 and 2020 consists of the following:
| 2021 |  | 2020
Interest income | $ | 850 |  | $ | 20,446
Dividend income |  | 98,915 |  |  | 96,569
Gain on sale of marketable securities |  | 73,783 |  |  | 28,546
Total | $ | 173,548 |  | $ | 145,561

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- Definition Tabular disclosure of investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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