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Income Per Share Attributable to Methode Shareholders - Narrative (Details) - shares
12 Months Ended
Apr. 30, 2016
May 02, 2015
May 03, 2014
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of EPS (in shares) 138,500 158,500  
RSAs      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of EPS (in shares)     700,000