Note 7 - Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate to Qualstar's Effective Rate (Details)	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Statutory federal income tax benefit	(34.00%)	(34.00%)	(34.00%)
State income taxes, net of federal income tax benefit	(4.30%)	(28.80%)	(3.70%)
Foreign income taxes, net of federal income tax benefit	1.80%
Engineering credits	(8.20%)	(1.50%)	(1.10%)
Valuation allowance	43.30%	65.20%	39.20%
Other	1.70%	(0.90%)	(0.40%)
	0.30%	0.00%	0.00%

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 statutory income tax expense (benefit) outside of the country of domicile.

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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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