Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (unaudited)

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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   $ 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