Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jan. 31, 2019
Accounting Policies [Abstract]
Exploratory Drilling Costs Capitalization and Impairment, Policy [Policy Text Block]	Exploration Stage We have established the existence of mineralized materials for certain uranium projects, including for our Palangana Mine. We have not established proven or probable reserves, as defined by the United States Securities and Exchange Commission (the “SEC”) under Industry Guide 7, through the completion of a “final” or “bankable” feasibility study for any of our uranium projects, including the Palangana Mine. Furthermore, we have no plans to establish proven or probable reserves for any of our uranium projects for which we plan on utilizing in-situ recovery (“ISR”) mining, such as the Palangana Mine. As a result, and despite the fact that we commenced extraction of mineralized materials at the Palangana Mine in November 2010, we remain in the Exploration Stage as defined under Industry Guide 7, and will continue to remain in the Exploration Stage until such time proven or probable reserves have been established. Since we commenced the extraction of mineralized materials at the Palangana Mine without having established proven or probable reserves, any mineralized materials established or extracted from the Palangana Mine should not in any way be associated with having established or produced from proven or probable reserves. In accordance with U.S. GAAP, expenditures relating to the acquisition of mineral rights are initially capitalized as incurred while exploration and pre-extraction expenditures are expensed as incurred until such time we exit the Exploration Stage by establishing proven or probable reserves. Expenditures relating to exploration activities such as drilling programs to establish mineralized materials are expensed as incurred. Expenditures relating to pre-extraction activities such as the construction of mine wellfields, ion exchange facilities and disposal wells are expensed as incurred until such time proven or probable reserves are established for that project, after which expenditures relating to mine development activities for that particular project are capitalized as incurred. Companies in the Production Stage as defined under Industry Guide 7, having established proven and probable reserves and exited the Exploration Stage, typically capitalize expenditures relating to ongoing development activities, with corresponding depletion calculated over proven and probable reserves using the units-of-production method and allocated to future reporting periods to inventory and, as that inventory is sold, to cost of goods sold. We are in the Exploration Stage which has resulted in us reporting larger losses than if we had been in the Production Stage due to the expensing, rather than capitalizing, of expenditures relating to ongoing mill and mine development activities. Additionally, there would be no corresponding amortization allocated to future reporting periods of our Company since those costs would have been expensed previously, resulting in both lower inventory costs and cost of goods sold and results of operations with higher gross profits and lower losses than if we had been in the Production Stage. Any capitalized costs, such as expenditures relating to the acquisition of mineral rights, are depleted over the estimated extraction life using the straight-line method. As a result, our consolidated financial statements may not be directly comparable to the financial statements of companies in the Production Stage.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent ly Adopted Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014 - 09, as amended by ASU No. 2016 - 12, “Revenue from Contracts with Customers (“Topic 606” )”, which requires revenue to be recognized based on the amount an entity is expected to be entitled to for promised goods or services provided to customers. The standard also requires expanded disclosures regarding contracts with customers. The guidance in this standard supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition”, and most industry-specific guidance. Adoption of the standard may be applied retrospectively to each prior period presented (the full retrospective method) or retrospectively with the cumulative effect recognized as of the date of initial application (the modified retrospective method). The standard is effective for fiscal periods beginning after December 15, 2017 and early adoption is not permitted. Accordingly, we have adopted this standard effective August 1, 2018 and have elected to apply the modified retrospective method. We have performed an assessment of the impact of implementation of ASU No. 2014 - 09, and concluded it will not change the timing of revenue recognition or amounts of revenue recognized compared to how we recognize revenue under our current policies. Our revenue was generated from the sale of uranium concentrates to customers. These sales contain a single delivery element and revenue is recognized at a single point in time when ownership, risk and rewards transfer to the buyer. In January 2016, the FASB issued ASU No. 2016 - 01, “Recognition and Measurement of Financial Assets and Financial Liabilities (“Topic 825” )”, which requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. This new guidance also updates certain disclosure requirements for these investments. The guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those years. Upon adoption, the cumulative effect adjustment should be recorded at the beginning of the fiscal year in which the guidance is adopted. We adopted this standard effective August 1, 2018. Upon adoption, we reclassified $103,641 unrealized gains and losses, net of taxes, related to investments in marketable securities by our company or through our equity-accounted investee, from accumulated other comprehensive income to accumulative deficit in our consolidated balance sheets. In November 2016, the FASB issued ASU 2016 - 18, “Restricted Cash”, which requires the statement of cash flows present the change in restricted cash and restricted cash equivalents during the period. The guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those years. We retrospectively adopted this standard effective August 1, 2018. Upon adoption, we included a reconciliation of cash and cash equivalents and restricted cash (previously “reclamation deposits”) reported within our consolidated balance sheets to the total shown in the consolidated statements of cash flows. Adoption of this guidance had no other impact on our consolidated financial statements or disclosures. In June 2018, the FASB issued ASU No. 2018 - 07, “Improvement to Nonemployee Share-Based Payment Accounting”, with amendments to expand the scope of Accounting Standard Codification (“ASC”), Topic 718, Compensation – Stock Compensation (“Topic 718” ), to include share-based payment transactions for acquiring goods and services from nonemployees, which were previously covered under ASC 505, “Equity-Based Payments to Non-Employees”. According to ASU No. 2018 - 07, nonemployee share-based payment awards within the scope of Topic 718 are measured at grant-date fair value of the equity instruments that an entity is obligated to issue when the good has been delivered or the service has been rendered and any other conditions necessary to earn the right to benefit from the instruments have been satisfied. The amendments in ASU No. 2018 - 07 are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. We have early adopted this standard effective August 1, 2018 along with the adoption of Topic 606, and early adoption of this standard has not had a significant impact on our condensed consolidated financial statements.