Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Option Activity Summary (Details) - $ / shares shares in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Outstanding (in shares)	275	325
Outstanding, weighted average grant date fair value (in dollars per share)	$ 5.25	$ 5.68
Granted (in shares)	876	50
Granted, weighted average grant date fair value (in dollars per share)	$ 0.64	$ 5.00
Exercised (in shares)	0	0
Exercised, weighted average grant date fair value (in dollars per share)	$ 0	$ 0
Canceled or expired (in shares)	(122)	(100)
Canceled or expired, weighted average grant date fair value (in dollars per share)	$ 4.96	$ 6.49
Outstanding (in shares)	1,029	275
Outstanding, weighted average grant date fair value (in dollars per share)	$ 1.35	$ 5.25

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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