Note 15 - Equity Incentive Plans - Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Total stock-based compensation expense	$ 811	$ 902	$ 2,561	$ 5,146
Cost of Sales [Member]
Total stock-based compensation expense	0	4	1	12
Research and Development Expense [Member]
Total stock-based compensation expense	2	2	5	25
Selling and Marketing Expense [Member]
Total stock-based compensation expense	0	3	0	9
General and Administrative Expense [Member]
Total stock-based compensation expense	$ 809	$ 893	$ 2,555	$ 5,100