Note J - Treasury Stock - Treasury Stock Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Treasury Stock Acquired, Shares (in shares)	36,444	49,034		164,399
Treasury Stock Acquired, Total Cost	$ 217	$ 444	$ 217	$ 1,503
Stock Repurchase Plan [Member]
Treasury Stock Acquired, Shares (in shares)	0	25,447		140,812
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 0	$ 9.23		$ 9.19
Treasury Stock Acquired, Total Cost	$ 0	$ 235		$ 1,294
Stock Repurchased from Employee for Restricted Stock Vesting [Member]
Treasury Stock Acquired, Shares (in shares)	36,444	23,587		23,587
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 5.95	$ 8.86		$ 8.86
Treasury Stock Acquired, Total Cost	$ 217	$ 209		$ 209