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Consolidated Statements of Equity (USD $)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interest [Member]
Total
BALANCE at Aug. 31, 2012 $ 88,073 $ 11,130,966 $ 25,260,034 $ 277,583 $ 187,913 $ 36,944,569
BALANCE, shares (in Shares) at Aug. 31, 2012 4,403,656          
Exercise of stock options 444 207,910       208,354
Exercise of stock options (in Shares) 22,171         37,040
Stock issued for employee stock purchase plan 124 56,615       56,739
Stock issued for employee stock purchase plan (in Shares) 6,209          
Stock option expense   306,451       306,451
Effect of subsidiary consolidation         3,960,920 3,960,920
Dividend received by non-controlling interest         (1,752,842) (1,752,842)
Comprehensive Income     3,366,894 38,578 1,404,938 4,810,410
BALANCE at Aug. 31, 2013 88,641 11,701,942 28,626,928 316,161 3,800,929 44,534,601
BALANCE, shares (in Shares) at Aug. 31, 2013 4,432,036          
Exercise of stock options 1,384 478,076       479,460
Exercise of stock options (in Shares) 69,184         74,000
Stock issued for employee stock purchase plan 67 42,513       42,580
Stock issued for employee stock purchase plan (in Shares) 3,332          
Stock option expense   454,015       454,015
Dividend received by non-controlling interest         (1,440,000) (1,440,000)
Investment by non-controlling interest         31,515 31,515
Comprehensive Income     4,106,372 (62,236) 1,444,813 5,488,949
BALANCE at Aug. 31, 2014 $ 90,092 $ 12,676,546 $ 32,733,300 $ 253,925 $ 3,837,257 $ 49,591,120
BALANCE, shares (in Shares) at Aug. 31, 2014 4,504,552