Note J - Treasury Stock - Treasury Stock Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Treasury Stock Acquired, Shares (in shares)	68,570	189,702	115,365	190,394
Treasury Stock Acquired, Average Cost (in dollars per share)
Treasury Stock Acquired, Total Cost	$ 562	$ 2,527	$ 1,059	$ 2,537
Stock Repurchase Plan [Member]
Treasury Stock Acquired, Shares (in shares)	68,570	189,702	115,365	189,702
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 8.19	$ 13.32	$ 9.18	$ 13.32
Treasury Stock Acquired, Total Cost	$ 562	$ 2,527	$ 1,059	$ 2,527
Stock Repurchased from Employee for Restricted Stock Vesting [Member]
Treasury Stock Acquired, Shares (in shares)	0	0	0	692
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 0	$ 0	$ 0	$ 14.20
Treasury Stock Acquired, Total Cost	$ 0	$ 0	$ 0	$ 10