Note G - Income Taxes - Reconciliation of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Income taxes computed at statutory federal income tax rate	$ (364)	$ 1,670
State income taxes, net of federal income tax expense	(174)	(6)
Permanent Differences	155	(187)
Foreign tax rate differential	(112)	(70)
Global intangible low-taxed income (GILTI)	402	5
Total (benefit) provision for income taxes	$ (93)	$ 1,412
Effective Income Tax Rate Reconciliation, Percent, Total	5.40%	17.80%