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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)
Oct. 31, 2012
Oct. 31, 2011
Income Taxes [Abstract]    
Accounts receivable, due to allowances for doubtful accounts and sales returns $ 77,356 $ 137,385
Inventories, due to allowance for damaged and slow-moving inventories and additional costs inventoried for tax purposes pursuant to the Tax Reform Act of 1986 995,304 790,363
Liabilities recorded for accrued expenses, deductible for tax purposes when paid 755,772 521,930
Share-based compensation expense 205,131 89,499
Investment in Centric Solutions 153,631 166,154
Net operating loss carryforwards 951,397 1,140,133
Other 92,766 85,291
Total gross deferred tax assets 3,231,357 2,930,755
Plant and equipment, due to differences in depreciation and capital gain recognition (428,010) (675,223)
Other receivables, due to accrual for financial reporting purposes   (10,955)
Total gross deferred tax liabilities (428,010) (686,178)
Net deferred tax asset $ 2,803,347 $ 2,244,577