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Stock-Based Compensation (Details Narrative) - USD ($)	3 Months Ended
Stock-Based Compensation (Details Narrative) - USD ($)	Oct. 31, 2020	Oct. 31, 2019	Nov. 30, 2010
Stock based compensation
Stock options, outstanding
Unrecognized costs related to outstanding stock options
Number of stock options granted
2011 Stock Incentive Plan [Member]
Number of stock option awards
2011 Stock Incentive Plan [Member] \| Maximum [Member]
Maximum number of shares authorized for issuance under the plan			4,000,000