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Note 7 - Long-term Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Sep. 30, 2021
Total debt $ 1,163  
Total debt 1,163  
Debt Instruments, Excluding Paycheck Protection Program Liability [Member]    
Total debt 1,163 $ 1,929
Total debt 1,163 1,929
Less: current portion (448) (732)
Long-term debt, net of current portion 715 1,197
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] | Vendor Loan [Member]    
Total debt 315 718
Total debt 315 718
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] | Term Loans, One [Member]    
Total debt 114 362
Total debt 114 362
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] | Term Loans, Two [Member]    
Total debt 420 466
Total debt 420 466
Debt Instruments, Excluding Paycheck Protection Program Liability [Member] | Seller Note [Member]    
Total debt 314 383
Total debt $ 314 $ 383