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Note 7 - Stock Option Activity (Details) (USD $)
6 Months Ended
Dec. 31, 2014
Balance at June 30, 2014 (in shares) 2,463,369us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Balance at June 30, 2014 (in dollars per share) $ 9.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Granted (in shares) 1,275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Granted (in dollars per share) $ 2.44us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Forfeited or expired (in shares) (444,945)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Forfeited or expired (in dollars per share) $ 9.73us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
Balance at December 31, 2014 (in shares) 3,293,424us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Balance at December 31, 2014 (in dollars per share) $ 6.43us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Balance at December 31, 2014 8 years 65 days