Note 10 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)	Jun. 30, 2015	Jun. 30, 2014
Net operating loss carryforwards	$ 13,283,000	$ 14,681,000
Capital loss carryforwards		1,674,000
Accrued expenses	$ 237,000	193,000
Expenses not currently deductible	88,000	100,000
Excess of book over tax depreciation	62,000	642,000
Excess of book over tax amortization	855,000	899,000
Other asset	$ 3,000	3,000
Foreign tax benefit		82,000
Total deferred tax assets	$ 14,528,000	18,274,000
Intangible assets	$ 2,061,000	2,194,000
Excess of tax over book depreciation		185,000
Other liabilities	$ 16,000	15,000
Total deferred tax liabilities	2,077,000	2,394,000
Deferred tax assets, net of liabilities	12,451,000	15,880,000
Valuation allowance	(8,014,000)	(11,029,000)
Net deferred tax asset	$ 4,437,000	$ 4,851,000