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Note 2 - Acquisitions - Unaudited Pro Forma Information (Details) - Standex Electronics Japan Corporation [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
Net Sales | $ 214,379 | $ 197,277
Net Income | $ 14,185 | $ 15,029
Basic (in dollars per share) | $ 1.12 | $ 1.19
Diluted (in dollars per share) | $ 1.11 | $ 1.17

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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