CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) |
Preferred Stock [Member] |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Accumulated Other Comprehensive Income (Loss) [Member] |
Accumulated Deficit [Member] |
Total |
|---|---|---|---|---|---|---|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||
| Adoption of accounting standards | $ 0 | $ 0 | $ 0 | $ 0 | $ 1,055,049 | $ 1,055,049 |
| Balance at Aug. 31, 2017 | $ 433 | $ 79,185 | 171,431,486 | (11,105) | (103,993,900) | 67,506,099 |
| Balance (in shares) at Aug. 31, 2017 | 432,513 | 23,754,098 | ||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||
| Share-based compensation | $ 0 | $ 0 | 324,840 | 0 | 0 | 324,840 |
| Exercise of options | $ 0 | $ 33 | 74,967 | 0 | 0 | 75,000 |
| Exercise of options (in shares) | 0 | 10,000 | ||||
| Net income (loss) | $ 0 | $ 0 | 0 | 0 | 414,680 | 414,680 |
| Unrealized holding gain (loss) on investments | 0 | 0 | 0 | 77,551 | 0 | 77,551 |
| Balance at Aug. 31, 2018 | $ 433 | $ 79,218 | 171,831,293 | 66,446 | (102,524,171) | 69,453,219 |
| Balance (in shares) at Aug. 31, 2018 | 432,513 | 23,764,098 | ||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||
| Share-based compensation | $ 0 | $ 0 | 336,228 | 0 | 0 | 336,228 |
| Exercise of options | $ 0 | $ 209 | 192,892 | 0 | 0 | 193,101 |
| Exercise of options (in shares) | 0 | 62,500 | ||||
| Net income (loss) | $ 0 | $ 0 | 0 | 0 | 4,811,148 | 4,811,148 |
| Unrealized holding gain (loss) on investments | 0 | 0 | 0 | (62,556) | 0 | (62,556) |
| Balance at Aug. 31, 2019 | $ 433 | $ 79,427 | $ 172,360,413 | $ 3,891 | $ (97,713,023) | $ 74,731,141 |
| Balance (in shares) at Aug. 31, 2019 | 432,513 | 23,826,598 |
| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for option under share-based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. No definition available.
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of stock issued as a result of the exercise of stock options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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