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 |
|
$ 33
|
74,967
|
0
|
0
|
75,000
|
| Stock option exercises (in shares) |
|
10,000
|
|
|
|
|
| Share-based compensation |
$ 0
|
$ 0
|
241,209
|
0
|
0
|
241,209
|
| Net income (loss) |
0
|
0
|
0
|
0
|
58,153
|
58,153
|
| Unrealized holding gain (loss) on investments |
0
|
0
|
0
|
71,330
|
0
|
71,330
|
| Balance at May. 31, 2018 |
$ 433
|
$ 79,218
|
171,747,662
|
60,225
|
(102,880,698)
|
69,006,840
|
| Balance (in shares) at May. 31, 2018 |
432,513
|
23,764,098
|
|
|
|
|
| Balance at Feb. 28, 2018 |
$ 433
|
$ 79,218
|
171,664,031
|
19,612
|
(102,935,299)
|
68,827,995
|
| Balance (in shares) at Feb. 28, 2018 |
432,513
|
23,764,098
|
|
|
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
| Stock option exercises |
|
$ 0
|
0
|
0
|
0
|
0
|
| Stock option exercises (in shares) |
|
0
|
|
|
|
|
| Share-based compensation |
$ 0
|
$ 0
|
83,631
|
0
|
0
|
83,631
|
| Net income (loss) |
0
|
0
|
0
|
0
|
54,601
|
54,601
|
| Unrealized holding gain (loss) on investments |
0
|
0
|
0
|
40,613
|
0
|
40,613
|
| Balance at May. 31, 2018 |
$ 433
|
$ 79,218
|
171,747,662
|
60,225
|
(102,880,698)
|
69,006,840
|
| Balance (in shares) at May. 31, 2018 |
432,513
|
23,764,098
|
|
|
|
|
| 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 |
|
$ 126
|
114,725
|
0
|
0
|
114,851
|
| Stock option exercises (in shares) |
|
37,500
|
|
|
|
|
| Share-based compensation |
$ 0
|
$ 0
|
257,813
|
0
|
0
|
257,813
|
| Net income (loss) |
0
|
0
|
0
|
0
|
1,799,318
|
1,799,318
|
| Unrealized holding gain (loss) on investments |
0
|
0
|
0
|
(53,790)
|
0
|
(53,790)
|
| Balance at May. 31, 2019 |
$ 433
|
$ 79,344
|
172,203,831
|
12,656
|
(100,724,853)
|
71,571,411
|
| Balance (in shares) at May. 31, 2019 |
432,513
|
23,801,598
|
|
|
|
|
| Balance at Feb. 28, 2019 |
$ 433
|
$ 79,344
|
172,107,735
|
12,687
|
(101,986,224)
|
70,213,975
|
| Balance (in shares) at Feb. 28, 2019 |
432,513
|
23,801,598
|
|
|
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
| Stock option exercises |
|
$ 0
|
0
|
0
|
0
|
0
|
| Stock option exercises (in shares) |
|
0
|
|
|
|
|
| Share-based compensation |
$ 0
|
$ 0
|
96,096
|
0
|
0
|
96,096
|
| Net income (loss) |
0
|
0
|
0
|
0
|
1,261,371
|
1,261,371
|
| Unrealized holding gain (loss) on investments |
0
|
0
|
0
|
(31)
|
0
|
(31)
|
| Balance at May. 31, 2019 |
$ 433
|
$ 79,344
|
$ 172,203,831
|
$ 12,656
|
$ (100,724,853)
|
$ 71,571,411
|
| Balance (in shares) at May. 31, 2019 |
432,513
|
23,801,598
|
|
|
|
|