Note J - Employee Post-Employment Benefits (Details) - Components of net periodic benefit cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 03, 2013		Sep. 04, 2012
Pension Benefits [Member]
Note J - Employee Post-Employment Benefits (Details) - Components of net periodic benefit cost [Line Items]
Service cost	$ 89		$ 115
Interest cost	434		525
Expected return on plan assets	(111)		(102)
Amortization of prior service cost		[1]	26	[1]
Recognized actuarial loss	428		565
Net periodic benefit cost	840		1,129
Postretirement Medical and Life Benefits [Member]
Note J - Employee Post-Employment Benefits (Details) - Components of net periodic benefit cost [Line Items]
Service cost	3		3
Interest cost	17		15
Amortization of prior service cost	(11)	[1]	(14)	[1]
Recognized actuarial loss	61		53
Net periodic benefit cost	$ 70		$ 57

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