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Note 14 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value Recurring Basis (USD $)
Nov. 30, 2014
Aug. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Available for sale securities $ 4,024,599us-gaap_AvailableForSaleSecurities $ 5,519,766us-gaap_AvailableForSaleSecurities
Cash equivalents 2,598,739us-gaap_CashAndCashEquivalentsFairValueDisclosure 2,477,017us-gaap_CashAndCashEquivalentsFairValueDisclosure
Total 6,623,338us-gaap_AssetsFairValueDisclosure 7,996,783us-gaap_AssetsFairValueDisclosure
Fair Value, Inputs, Level 1 [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Available for sale securities 4,024,599us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
5,519,766us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Cash equivalents 2,598,739us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
2,477,017us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Total $ 6,623,338us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
$ 7,996,783us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member