Marketable Securities (Details) - Schedule of classified marketable securities - Noncurrent [Member] - USD ($)	Jul. 31, 2022	Jul. 31, 2021
Available-for-sale:
Cost	$ 1,594,569	$ 2,340,830
Gross Unrealized Gains	1,166,500	1,560,263
Gross Unrealized Losses
Fair Value	2,761,069	3,901,093
Mutual funds [Member]
Available-for-sale:
Cost	528,976	984,869
Gross Unrealized Gains	269,400	619,972
Gross Unrealized Losses
Fair Value	798,376	1,604,841
Corporate equity securities [Member]
Available-for-sale:
Cost	1,065,593	1,355,961
Gross Unrealized Gains	897,100	940,291
Gross Unrealized Losses
Fair Value	$ 1,962,693	$ 2,296,252

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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