Note N - Income Taxes - Reconciliation of U.S. Federal Income Taxes to Actual Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
U.S. federal income tax at 21%	$ 2,148	$ (2,066)
Increases (reductions) in tax resulting from:
Foreign tax items	(575)	552
State taxes	(12)	(440)
Change in prior year estimate	372	(1,138)
Nondeductible PPP loan expenses	0	(1,722)
Research and development tax credits	(10)	(336)
Unrecognized tax benefits	(152)	59
Stock compensation	(46)	252
Rate changes	121	18
Deferred tax basis adjustments	(54)	42
Executive compensation	42	0
GILTI inclusion	920	0
Valuation allowance	(981)	24,420
Other, net	50	39
Income tax (benefit) expense	$ 1,823	$ 19,680

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