Note I - Stockholders' Equity - Treasury Stock Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Treasury Stock Acquired, Shares (in shares)	37,128	164,399
Treasury Stock Acquired, Total Cost	$ 221	$ 1,503
Stock Repurchase Plan [Member]
Treasury Stock Acquired, Shares (in shares)	0	140,812
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 0	$ 9.19
Treasury Stock Acquired, Total Cost	$ 0	$ 1,294
Stock Repurchased from Employee for Restricted Stock Vesting [Member]
Treasury Stock Acquired, Shares (in shares)	37,128	23,587
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 5.96	$ 8.86
Treasury Stock Acquired, Total Cost	$ 221	$ 209