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Note 11 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
May 28, 2021
Income Tax Expense (Benefit), Total $ 4 $ (1,176) $ 12 $ (1,175)  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   (1,181)   (1,181)  
Hawk Search [Member]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities   $ 1,181   $ 1,181 $ 1,181