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Note 15 - Other Income (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Government Grant $ 70 $ 154
Other Nonoperating Income (Expense) [Member]    
Government Grant 70  
Government Grant, Foreign, COVID-19 Relief Income $ 42 142
Government Grant, Foreign   $ 154