Note J - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 02, 2014		Sep. 03, 2013
Note J - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Amortization of prior service cost (a)			$ 11
Recognized actuarial loss	463		489
Pension Plan [Member]
Note J - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost	75		89
Interest cost	443		434
Expected return on plan assets	(124)		(111)
Recognized actuarial loss	430		428
Net periodic benefit cost	824		840
Postretirement Medical and Life Benefit Plans [Member]
Note J - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost	1		3
Interest cost	12		17
Amortization of prior service cost (a)		[1]	(11)	[1]
Recognized actuarial loss	33		61
Net periodic benefit cost	$ 46		$ 70

[1] Prior service costs are amortized on a straight-line basis over the average remaining service period of employees expected to receive benefits.