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Note 9 - Stock Option Plans (Details) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2008
Plan 1998 [Member]
Jun. 30, 1998
Plan 1998 [Member]
Jun. 30, 2013
Plan 2008 [Member]
Jun. 30, 2012
Plan 2008 [Member]
Jun. 30, 2011
Plan 2008 [Member]
Jun. 30, 2009
Plan 2008 [Member]
Jun. 30, 2008
Plan 2008 [Member]
Jun. 30, 2009
Plan 2008 [Member]
Minimum [Member]
Note 9 - Stock Option Plans (Details) [Line Items]                      
Share-based Compensation $ 60,000 $ 9,000 $ 39,000                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)         1,215,000         500,000  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years     4 years             4 years
Share-Based Compensation Arrangement By Share- ased Payment Award Award Vesting Period Percentage Per Year       25.00%         25.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)           212,000 224,000        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized           212,000          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition           2 years 292 days          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value           $ 120,000 $ 9,000 $ 14,000