Note 10 - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 04, 2013	Jun. 03, 2014		Jun. 04, 2013		Jun. 05, 2012
Pension Benefits [Member]
Note 10 - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost		$ 356		$ 460		$ 545
Interest cost		1,737		2,100		2,346
Expected return on plan assets		(444)		(409)		(514)
Amortization of prior service cost (a)		1	[1]	106	[1]	262	[1]
Recognized actuarial loss		1,711		2,259		1,738
Curtailment expense	2,500			2,481
Net periodic benefit cost		3,361		6,997		4,377
Postretirement Medical and Life Benefits [Member]
Note 10 - Employee Post-Employment Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost		13		11		10
Interest cost		67		60		71
Amortization of prior service cost (a)		(46)	[1]	(56)	[1]	(55)	[1]
Recognized actuarial loss		244		214		136
Net periodic benefit cost		$ 278		$ 229		$ 162

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