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Note 16 - Debt (Details Textual) - USD ($)		12 Months Ended
	Apr. 26, 2022	Jun. 30, 2022	Jun. 30, 2021
Amortization of Debt Issuance Costs and Discounts, Total		$ 34,675	$ 0
Unsecured Convertible Debenture [Member]
Debt Instrument, Face Amount	$ 20,000,000
Debt Instrument, Interest Rate, Stated Percentage	8.00%
Debt Instrument, Interest Paid in Cash, Percentage	6.00%
Debt Instrument, Interest Paid in Shares, Percentage	2.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share)	$ 30.50
Debt Instrument, Convertible, Number of Equity Instruments	655,738
Debt Instrument, Covenant, Redeemable, Percentage of Par	105.00%
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	130.00%
Debt Instrument, Redeemable, Percentage of Par For First Three Years	130.00%
Debt Instrument, Redeemable, Percentage of Par after Three Years	115.00%
Debt Instrument, Fee Percentage	3.00%
Share Price (in dollars per share)	$ 24.82
Stock Issued During Period, Shares, Debt Establishment Fee (in shares)	24,174
Investor Right Agreement, Ownership Percentage	5.00%
Investor Right Agreement, Maximum Percentage of Shares Transferable without Notifying in Advance	0.50%
Debt Instrument, Unamortized Discount (Premium), Net, Total	$ 600,000	600,000
Debt Issuance Costs, Net, Total	$ 200,000	200,000
Long-Term Debt, Total		19,200,000
Interest Expense, Debt, Total		300,000
Interest Expense, Debt, Excluding Amortization		289,000
Amortization of Debt Issuance Costs and Discounts, Total		$ 35,000
Debt Instrument, Interest Rate, Effective Percentage	8.00%	1.00%
Unsecured Convertible Debenture [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument, Fair Value Disclosure, Total		$ 20,000,000.0

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Data Type:	na
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