RETIREMENT BENEFITS (Tables)

9 Months Ended

Feb. 28, 2012

RETIREMENT BENEFITS [Abstract]

Defined benefit plan disclosure

The following tables detail the components of net periodic benefit costs and the amounts recognized in our Condensed Consolidated Financial Statements for the Retirement Plan, Management Retirement Plan, and the Executive Supplemental Pension Plan (collectively, the “Pension Plans”) and the Postretirement Medical and Life Benefits plans (in thousands):

	Pension Benefits
	Thirteen weeks ended								Thirty-nine weeks ended
	February 28,				March 1,				February 28,				March 1,
	2012				2011				2012				2011
Service cost		$	134			$	129			$	402			$	387
Interest cost			576				573				1,728				1,719
Expected return on plan assets			(126	)			(98	)			(378	)			(294	)
Amortization of prior service cost			64				82				192				246
Recognized actuarial loss			426				398				1,278				1,194
Net periodic benefit cost		$	1,074			$	1,084			$	3,222			$	3,252

	Postretirement Medical and Life Benefits
	Thirteen weeks ended								Thirty-nine weeks ended
	February 28,				March 1,				February 28,				March 1,
	2012				2011				2012				2011
Service cost		$	2			$	2			$	6			$	6
Interest cost			18				19				54				57
Amortization of prior service cost			(14	)			(15	)			(42	)			(45	)
Recognized actuarial loss			34				28				102				84
Net periodic benefit cost		$	40			$	34			$	120			$	102