Note 12 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 29,005,000	$ (17,789,000)
Income (Loss) from Continuing Operations before Income Taxes, Foreign	$ (763,000)	(799,000)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%
Deferred Income Tax Expense (Benefit)	$ (673,000)
Deferred Income Tax (Benefit) Due to Prior Years State Rate Changes	(559,000)	$ (157,000)	$ (402,000)
Tax Credit Carryforward, Amount	1,456,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,209,000
Tax Benefits Related To Stock Options Included In Valuation Allowance	215,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards	118,956,000
Tax Credit Carryforward, Amount	1,458,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 42,922,000