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Consolidated Statements of Equity (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Noncontrolling Interest [Member]
Total
Balance (in shares) at Aug. 31, 2020 9,099,990          
Balance at Aug. 31, 2020 $ 182,000 $ 17,415,043 $ 42,472,810 $ (3,410,438) $ 3,045,026 $ 59,704,441
Stock options exercised (in shares) 74,950         74,950
Stock options exercised $ 1,499 582,915 0 0 0 $ 584,414
Stock issued for employee stock purchase plan (in shares) 9,871          
Stock issued for employee stock purchase plan $ 197 74,136 0 0 0 74,333
Stock option expense 0 664,174 0 0 0 664,174
Dividends paid to stockholders 0 0 (1,780,956)   0 (1,780,956)
Dividend received by non-controlling interest 0 0 0 0 (400,000) (400,000)
Net income 0 0 6,281,238 0 715,499 6,996,737
Other comprehensive income (loss) $ 0 0 0 (114,592) 22,030 (92,562)
Balance (in shares) at Aug. 31, 2021 9,184,811          
Balance at Aug. 31, 2021 $ 183,696 18,736,268 46,973,092 (3,525,030) 3,382,555 65,750,581
Stock options exercised (in shares) 42,071          
Stock options exercised $ 842 197,798 0 0 0 198,640
Stock issued for employee stock purchase plan (in shares) 5,601          
Stock issued for employee stock purchase plan $ 112 73,533 0 0 0 73,645
Stock option expense 0 931,532 0 0 0 931,532
Dividends paid to stockholders 0 0 (2,581,179)   0 (2,581,179)
Dividend received by non-controlling interest 0 0 0 0 (402,729) (402,729)
Net income 0 0 6,324,700 0 861,234 7,185,934
Other comprehensive income (loss) $ 0 0 0 (3,720,102) (192,026) (3,912,128)
Balance (in shares) at Aug. 31, 2022 9,232,483          
Balance at Aug. 31, 2022 $ 184,650 $ 19,939,131 $ 50,716,613 $ (7,245,132) $ 3,649,034 $ 67,244,296