Note 7 - Income Taxes - Reconciliation of the Statutory Tax Rate to the Effective Tax Rate (Details)	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	27.50%	34.00%
Deferred tax effects from Tax Act	20.00%	0.00%
Statutory state income tax rate	7.00%	6.00%
Effective state income tax rate	9.80%	10.00%
Change in valuation allowance	(32.90%)	(79.00%)
Non-deductible expenses	1.00%	3.00%
Effective income tax rate	32.40%	(26.00%)

Represents the effective tax rate reconciliation for the statutory minimum, as a percentage.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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