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Note 7 - Accrued Restructuring Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Sep. 30, 2015
Facilities and Related [Member]    
Accrued restructuring liabilities $ 279 $ 259
Employee Severance [Member]    
Accrued restructuring liabilities 395
Other Restructuring Costs [Member]    
Accrued restructuring liabilities 64 $ 48
Accrued restructuring liabilities $ 738 $ 307