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Note 5 - Intangible Assets (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Amortization of Intangible Assets $ 107 $ 152
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 323  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 335  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 242  
Finite-Lived Intangible Assets, Amortization Expense, Year Four $ 22