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Note 8 - Restructuring Charges (Details Textual) (Employee Severance [Member], Scenario, Forecast [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 31, 2014
Employee Severance [Member] | Scenario, Forecast [Member]
 
Restructuring Charges $ 0.8us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember