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]
Preferred Stock [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Common Stock [Member]
Common Stock [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Deficit [Member]
Accumulated Deficit [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Total
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at Aug. 31, 2018 $ 433 $ 0 $ 79,218 $ 0 $ 171,831,293 $ 0 $ 66,446 $ 0 $ (102,524,171) $ 0 $ 69,453,219 $ 0
Balance (in shares) at Aug. 31, 2018 432,513   23,764,098                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Stock option exercises $ 0   $ 126   114,725   0   0   114,851  
Stock option exercises (in shares) 0   37,500                  
Share-based compensation $ 0   $ 0   257,813   0   0   257,813  
Net income 0   0   0   0   1,799,318   1,799,318  
Unrealized holding 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   0  
Stock option exercises (in shares) 0   0                  
Share-based compensation $ 0   $ 0   96,096   0   0   96,096  
Net income 0   0   0   0   1,261,371   1,261,371  
Unrealized holding 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                  
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                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Stock option exercises $ 0   $ 50   39,975   0   0   40,025  
Stock option exercises (in shares) 0   15,000                  
Stock granted for services $ 0   $ 40   149,360   0   0   149,400  
Stock granted for services (in shares) 0   12,000                  
Share-based compensation $ 0   $ 0   285,709   0   0   285,709  
Net income 0   0   0   0   6,063,720   6,063,720  
Unrealized holding loss on investments 0   0   0   (3,891)   0   (3,891)  
Balance at May. 31, 2020 $ 433   $ 79,517   172,835,457   0   (91,649,303)   81,266,104  
Balance (in shares) at May. 31, 2020 432,513   23,853,598                  
Balance at Feb. 29, 2020 $ 433   $ 79,509   172,748,925   233   (91,676,640)   81,152,460  
Balance (in shares) at Feb. 29, 2020 432,513   23,851,098                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Stock option exercises $ 0   $ 8   4,617   0   0   4,625  
Stock option exercises (in shares) 0   2,500                  
Stock granted for services $ 0   $ 0   0   0   0   0  
Stock granted for services (in shares) 0   0                  
Share-based compensation $ 0   $ 0   81,915   0   0   81,915  
Net income 0   0   0   0   27,337   27,337  
Unrealized holding loss on investments 0   0   0   (233)   0   (233)  
Balance at May. 31, 2020 $ 433   $ 79,517   $ 172,835,457   $ 0   $ (91,649,303)   $ 81,266,104  
Balance (in shares) at May. 31, 2020 432,513   23,853,598