Note A - Basis of Presentation and Summary of Significant Accounting Policies - Contract Liabilities and Revenue Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Contract Liabilities (Customer Deposits), balance	$ 302	$ 317
Contract Liabilities (Customer Deposits), addition	1,113	413
Contract Liabilities (Customer Deposits), revenue recognized	(779)	(325)
Contract Liabilities (Customer Deposits), customer refunds	0	0
Contract Liabilities (Customer Deposits), balance	$ 636	$ 405