Note F - Income Taxes - Reconciliation of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income taxes computed at statutory federal income tax rate	$ 2,969	$ 3,438
State income taxes, net of federal income tax expense	131	95
Expenses not deductible for tax purposes	(90)	29
Foreign tax rate differential	(473)	(613)
Tax Act	3,025
Other, net		(73)
Total provision for income taxes	$ 5,562	$ 2,876
Effective Income Tax Rate Reconciliation, Percent, Total	52.40%	28.40%