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 issued for employee stock purchase plan (in shares) 9,871          
Stock issued for employee stock purchase plan $ 197 74,137 0 0 0 74,334
Stock option expense 0 503,338 0 0 0 503,338
Dividends paid to stockholders 0 0 (1,183,943) 0 0 (1,183,943)
Dividend received by non-controlling interest 0 0 0 0 (200,000) (200,000)
Net income 0 0 4,628,890 0 589,781 5,218,671
Other comprehensive gain 0 0 0 692,503 64,770 757,273
Other comprehensive income $ 0 0 0 692,503 64,770 757,273
BALANCE (in shares) at May. 31, 2021 9,109,861          
BALANCE at May. 31, 2021 $ 182,197 17,992,518 45,917,757 (2,717,935) 3,499,577 64,874,114
BALANCE (in shares) at Feb. 28, 2021 9,104,636          
BALANCE at Feb. 28, 2021 $ 182,093 17,793,646 44,455,982 (2,969,563) 3,232,806 62,694,964
Stock issued for employee stock purchase plan (in shares) 5,225          
Stock issued for employee stock purchase plan $ 104 38,038 0 0 0 38,142
Stock option expense 0 160,834 0 0 0 160,834
Dividends paid to stockholders 0 0 (592,141) 0 0 (592,141)
Net income 0 0 2,053,916 0 256,132 2,310,048
Other comprehensive gain 0 0 0 251,628 10,639 262,267
Other comprehensive income $ 0 0 0 251,628 10,639 262,267
BALANCE (in shares) at May. 31, 2021 9,109,861          
BALANCE at May. 31, 2021 $ 182,197 17,992,518 45,917,757 (2,717,935) 3,499,577 64,874,114
BALANCE (in shares) at Aug. 31, 2021 9,184,811          
BALANCE at Aug. 31, 2021 $ 183,696 18,736,268 46,973,094 (3,525,030) 3,382,553 65,750,581
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 options exercised (in shares) 42,071          
Stock options exercised $ 842 197,798 0 0 0 198,640
Stock option expense 0 698,649 0 0 0 698,649
Dividends paid to stockholders 0 0 (1,934,906) 0 0 (1,934,906)
Dividend received by non-controlling interest 0 0 0 0 (402,729) (402,729)
Net income 0 0 5,676,773 0 551,808 6,228,581
Other comprehensive gain 0 0 0 (1,858,370) (78,421) (1,936,791)
Other comprehensive income $ 0 0 0 (1,858,370) (78,421) (1,936,791)
BALANCE (in shares) at May. 31, 2022 9,232,483          
BALANCE at May. 31, 2022 $ 184,650 19,706,248 50,714,961 (5,383,400) 3,453,211 68,675,670
BALANCE (in shares) at Feb. 28, 2022 9,221,517          
BALANCE at Feb. 28, 2022 $ 184,430 19,379,032 50,361,068 (3,858,689) 3,371,926 69,437,767
Stock issued for employee stock purchase plan (in shares) 2,966          
Stock issued for employee stock purchase plan $ 59 35,054 0 0 0 35,113
Stock options exercised (in shares) 8,000          
Stock options exercised $ 161 59,279 0 0 0 59,440
Stock option expense 0 232,883 0 0 0 232,883
Dividends paid to stockholders 0 0 (646,274) 0 0 (646,274)
Dividend received by non-controlling interest 0 0 0 0 (100,000) (100,000)
Net income 0 0 1,000,167 0 210,596 1,210,763
Other comprehensive gain 0 0 0 (1,524,711) (29,311) (1,554,022)
Other comprehensive income $ 0 0 0 (1,524,711) (29,311) (1,554,022)
BALANCE (in shares) at May. 31, 2022 9,232,483          
BALANCE at May. 31, 2022 $ 184,650 $ 19,706,248 $ 50,714,961 $ (5,383,400) $ 3,453,211 $ 68,675,670