Note 16 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Income Tax Expense (Benefit), Total	$ 92,000	$ (599,000)	$ (92,000,000,000)
Effective Income Tax Rate Reconciliation, Percent, Total			0.70%
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount			$ 505,000
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount			$ 1.1
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Deferred Tax Assets, Valuation Allowance	$ 40,100,000