Note 6 - Income before Income Tax, Domestic and Foreign (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Taxes at federal statutory rates	$ 1,272,000	$ 1,301,000
State taxes, net of federal benefit	8,000	(12,000)
Rate changes	(19,000)	56,000
Permanent items and other	100,000	130,000
Research and development	(577,000)
NOL expiration		4,000
Differential in UK corporate tax rate	(515,000)	(519,000)
Change in valuation allowance	(80,000)	(138,000)
Total tax expense (benefit)	$ 189,000	$ 822,000