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NET INCOME PER SHARE - Narrative (Details) - shares
3 Months Ended 6 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of EPS (in shares) 158,500 158,500 158,500 158,500
Restricted Stock Awards (RSAs)        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of EPS (in shares) 684,000 700,000 684,000 700,000