Note 8 - Employee Post-employment Benefits - Change in Benefit Obligation and Plan Assets and Reconciliation of Funded Status (Details) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2016	Jun. 02, 2015	Jun. 03, 2014
Pension Plan [Member]
Beginning projected benefit obligation		$ 43,843	$ 42,774
Service cost		312	301	$ 356
Interest cost		1,999	1,773	1,737
Plan participant contributions
Actuarial loss/(gain)		1,411	1,620
Benefits paid		(2,888)	(2,625)
Curtailment gain		(248)
Benefit obligation at end of year		44,429	43,843	42,774
Beginning fair value of plan assets		6,786	7,020
Actual return on plan assets		(318)	336
Employer contributions		2,629	2,055
Ending fair value of plan assets		6,209	6,786	7,020
Funded status at end of year	[1]	(38,220)	(37,057)
Consolidated Balance Sheets:		(2,527)	(3,185)
Other deferred liabilities		(35,693)	(33,872)
Net amount recognized at year-end		(38,220)	(37,057)
Prior service cost			(1)
Net actuarial loss		(16,821)	(17,148)
Total amount recognized		(16,821)	(17,149)
Postretirement Medical and Life Benefits [Member]
Beginning projected benefit obligation		1,404	1,376
Service cost		4	4	13
Interest cost		47	46	67
Plan participant contributions		73	78
Actuarial loss/(gain)		(373)	111
Benefits paid		(55)	(211)
Curtailment gain
Benefit obligation at end of year		1,100	1,404	1,376
Beginning fair value of plan assets
Actual return on plan assets
Employer contributions		(18)	133
Ending fair value of plan assets
Funded status at end of year		(1,100)	(1,404)
Consolidated Balance Sheets:		(113)	(137)
Other deferred liabilities		(987)	(1,267)
Net amount recognized at year-end		(1,100)	(1,404)
Prior service cost
Net actuarial loss		(491)	(994)
Total amount recognized		(491)	(994)
Benefits paid			(65)
Beginning fair value of plan assets		6,786
Ending fair value of plan assets		$ 6,209	$ 6,786

[1] The funded status reflected above includes the liabilities attributable to all of the Pension Plans but only the assets of the Retirement Plan as the other plans are not considered funded for Employee Retirement Income Security Act purposes. To provide a source for the payment of benefits under the Executive Supplemental Pension Plan and the Management Retirement Plan, we own whole-life insurance contracts on some of the participants. The cash value of these policies, which are included within the Other Assets caption in our Consolidated Balance Sheets, was $27.9 million and $29.5 million at May 31, 2016 and June 2, 2015, respectively. In addition, we held in trust $0.4 million and a negligible amount of cash and cash equivalents as of May 31, 2016 and June 2, 2015, respectively, relating to these policies. We maintain a rabbi trust to hold the policies and death benefits as they are received.