Note A - Organization and Summary of Significant Accounting Policies - Contract Liabilities and Revenue Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Contract Liabilities (Customer Deposits), balance	$ 140	$ 1,721
Contract Liabilities (Customer Deposits), addition	317	140
Contract Liabilities (Customer Deposits), revenue recognized	(137)	(1,721)
Contract Liabilities (Customer Deposits), customer refunds	(3)	0
Contract Liabilities (Customer Deposits), balance	$ 317	$ 140