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Note 7 - Income Taxes (Detail) (USD $)	12 Months Ended
Note 7 - Income Taxes (Detail) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jul. 31, 2007
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 13,300,000	$ 10,700,000	$ 10,100,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	10,000,000	8,400,000	8,100,000
Income Tax Reconciliation, Tax Credits, Research	1,800,000	1,700,000	1,500,000
Liability for Uncertain Tax Positions, Noncurrent				$ 36,000

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

+ References+ Details

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

+ References+ Details