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Note 11 - Warranty Accrual - Warrant Liability (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Beginning $ 14 $ 12
Additions charged to cost and expenses 2 7
Reversal 0 (4)
Currency translation effect 0 (1)
Ending $ 16 $ 14