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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 | 6 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Net Sales | $ 209,751 | $ 189,796 | $ 424,130 | $ 387,060
Net Income | $ (2,804) | $ 12,217 | $ 11,020 | $ 27,134
Basic (in dollars per share) | $ (0.22) | $ 0.97 | $ 0.87 | $ 2.14
Diluted (in dollars per share) | $ (0.22) | $ 0.96 | $ 0.86 | $ 2.12

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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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