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CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (unaudited) - 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] |  |  |  |  |  |
Stock option exercises |  | $ 0 | 0 |  |  | 0
Stock option exercises (in shares) |  | 0 |  |  |  |
Share-based compensation | $ 0 | $ 0 | 80,193 | 0 | 0 | 80,193
Net income | 0 | 0 | 0 | 0 | (96,611) | (96,611)
Unrealized holding gain on investments | 0 | 0 | 0 | 19,622 | 0 | 19,622
Balance at Nov. 30, 2017 | $ 433 | $ 79,185 | 171,511,679 | 8,517 | (103,035,462) | 68,564,352
Balance (in shares) at Nov. 30, 2017 | 432,513 | 23,754,098 |  |  |  |
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] |  |  |  |  |  |
Stock option exercises |  | $ 84 | 78,167 |  |  | 78,251
Stock option exercises (in shares) |  | 25,000 |  |  |  |
Share-based compensation | $ 0 | $ 0 | 103,476 | 0 | 0 | 103,476
Net income | 0 | 0 | 0 | 0 | 633,972 | 633,972
Unrealized holding gain on investments | 0 | 0 | 0 | 11,796 | 0 | 11,796
Balance at Nov. 30, 2018 | $ 433 | $ 79,302 | $ 172,012,936 | $ 78,242 | $ (101,890,199) | $ 70,280,714
Balance (in shares) at Nov. 30, 2018 | 432,513 | 23,789,098 |  |  |  |

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