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DEBT AND CREDIT AGREEMENT (Details) (Line of credit, USD $)
 9 Months Ended
Feb. 01, 2014
Line of credit
  
Line of Credit Facility [Line Items]  
Maximum borrowing capacity $ 100,000,000
Possible increase of maximum borrowing capacity subject to customary conditions and lender approval 50,000,000
Basis spread on LIBOR variable rate 1.50%
Variable interest rate description LIBOR
Increase, additional borrowings 28,500,000
Interest expense 820,000
Amount outstanding 50,000,000
Remaining borrowing capacity $ 50,000,000