Note J - Treasury Stock - Treasury Stock Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Treasury Stock Acquired, Average Cost (in dollars per share)
Treasury Stock Acquired, Total Cost	$ 10	$ 1,743
Total, shares (in shares)	692	236,082
Total, cost	$ 10	$ 1,743
Stock Repurchase Plan [Member]
Treasury Stock Acquired, Shares (in shares)	0	235,390
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 0	$ 7.38
Treasury Stock Acquired, Total Cost	$ 0	$ 1,738
Stock Repurchased in Connection with Stock Option Exercised [Member]
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 0	$ 0
Shares acquired in connection with stock option exercises, shares (in shares)	0	0
Shares acquired in connection with stock option exercises, cost	$ 0	$ 0
Stock Repurchased from Employee for Restricted Stock Vesting [Member]
Treasury Stock Acquired, Shares (in shares)	692	692
Treasury Stock Acquired, Average Cost (in dollars per share)	$ 14.20	$ 6.74
Treasury Stock Acquired, Total Cost	$ 10	$ 5