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Note 8 - Stockholders' Equity (Details) - Stock Options - Valuation Assumptions
6 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Sep. 30, 2014
Note 8 - Stockholders' Equity (Details) - Stock Options - Valuation Assumptions [Line Items]      
Volatility 80.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate 49.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate  
Dividend yield 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate    
Risk-free interest rate 0.51%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate 0.62%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate  
Expected term (years) 2 years 2 years 248 days  
Minimum [Member]      
Note 8 - Stockholders' Equity (Details) - Stock Options - Valuation Assumptions [Line Items]      
Volatility     49.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Risk-free interest rate     0.59%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Expected term (years)     2 years 229 days
Maximum [Member]      
Note 8 - Stockholders' Equity (Details) - Stock Options - Valuation Assumptions [Line Items]      
Volatility     50.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Risk-free interest rate     0.68%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Expected term (years)     2 years 259 days