COMMON STOCK AND STOCK-BASED COMPENSATION - Changes in the Number of Issued Common Shares (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	Jul. 26, 2013	Jul. 27, 2013	Jul. 28, 2012
Stock Issued or Granted During Period, Share-based Compensation [Abstract]
Balance at the beginning of the period (in shares)		38,455,853	38,375,678
Options exercised (in shares)		97,007	0
Restricted stock awards vested (in shares)		27,000	27,000
Balance at the end of the period (in shares)		38,579,860	38,402,678
Common stock cash dividend	$ 2,605