Note J - Employee Post-employment Benefits (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Mar. 03, 2015	Mar. 04, 2014		Mar. 03, 2015	Mar. 04, 2014
Note J - Employee Post-employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Amortization of prior service cost (a)		$ 12			$ 34
Recognized actuarial loss	463	489		1,390	1,466
Pension Plan [Member]
Note J - Employee Post-employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost	75	89		225	267
Interest cost	443	435		1,330	1,303
Expected return on plan assets	(124)	(111)		(373)	(333)
Recognized actuarial loss	430	427		1,290	1,283
Net periodic benefit cost	824	840		2,472	2,520
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	4		3	10
Interest cost	12	16		35	50
Amortization of prior service cost (a)		(12)	[1]		(34)	[1]
Recognized actuarial loss	33	61		100	183
Net periodic benefit cost	$ 46	$ 69		$ 138	$ 209

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