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Note 15 - Equity Incentive Plans - Stock Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Total stock-based compensation expense $ 139 $ 811 $ 463 $ 2,561
Cost of Sales [Member]        
Total stock-based compensation expense 0 0 1 1
Research and Development Expense [Member]        
Total stock-based compensation expense 8 2 11 5
Selling and Marketing Expense [Member]        
Total stock-based compensation expense 11 0 57 0
General and Administrative Expense [Member]        
Total stock-based compensation expense 120 697 394 2,125
Net Loss From Discontinued Operations [Member]        
Total stock-based compensation expense $ 0 $ 112 $ 0 $ 430