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Note 2 - Stock-based Compensation (Details) (USD $)
Mar. 31, 2014
Mar. 31, 2013
Disclosure Text Block Supplement [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares 0 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 0 $ 0