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Document and Entity Information
 3 Months Ended
Jul. 31, 2012
Sep. 10, 2012
Document and Entity Information [Abstract]    
Entity Registrant Name KEWAUNEE SCIENTIFIC CORP /DE/  
Entity Central Index Key 0000055529  
Document Type 10-Q/A  
Document Period End Date Jul. 31, 2012  
Amendment Flag true  
AmendmentDescription The purpose of this Amendment No. 1 on Form 10–Q/A (this “Amendment”) to our Quarterly Report on Form 10-Q for the period ended July 31, 2012 filed with the Securities and Exchange Commission on September 14, 2012 (the “Original Report”), is solely to furnish a revised Exhibit 101 to the Original Report in accordance with Rule 405 of Regulation S-T. The interactive data files on Exhibit 101 previously filed did not have the required levels 1-3 tagging. This Amendment does not otherwise change or update the disclosures set forth in the Original Report and does not otherwise reflect events occurring after the filing of the Original Report. Pursuant to Rule 406T of Regulation S–T, the interactive data files on Exhibit 101 hereto are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities Act of 1934, as amended, and otherwise are not subject to liability under those sections.  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --04-30  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   2,587,271