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Note 15 - Income Taxes (Detail) - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes: (USD $)
Aug. 31, 2012
Aug. 31, 2011
Current:    
Accrued bonus $ 404,100  
Allowance for doubtful accounts 7,200 7,200
Inventory costs 11,900 12,600
Prepaid expenses and other (27,300) (24,900)
Other accrued expenses 96,200 122,600
Deferred joint venture expenses 104,100 104,100
Total current 596,200 221,600
Noncurrent:    
Property and equipment (159,500) (141,100)
Goodwill 43,100 51,000
Other intangible assets 949,200 497,200
Nonqualified stock options 196,100 113,000
Foreign tax credit carryforward 3,438,300 3,524,300
Research and development credit 1,485,800 1,155,600
New hire retention credit 9,000 10,000
5,962,000 5,210,000
Valuation allowance (4,933,100) (3,799,300)
Total noncurrent $ 1,028,900 $ 1,410,700