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Note 2 - Stock-based Compensation (Details) - USD ($) | Mar. 31, 2016 | Mar. 31, 2015
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Disclosure Text Block Supplement [Abstract] |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 0 | $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares | 0 | 0

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- References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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