Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Deferred Income Tax Expense (Benefit)	$ (823)
Liability for Uncertainty in Income Taxes, Current	0	0
Income Tax Examination, Penalties and Interest Accrued	0	0
Expired in 2020 [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		$ 77
Domestic Tax Authority [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	35,600
State and Local Jurisdiction [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 15,200