Note 8 - Employee Post-employment Benefits (Tables)

3 Months Ended

Sep. 01, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Pension Plans
	Thirteen weeks ended
	September 1, 2015			September 2, 2014
Service cost	$	230		$	75
Interest cost		599			443
Expected return on plan assets		(103	)		(124	)
Recognized actuarial loss		628			430
Net periodic benefit cost	$	1,354		$	824

	Postretirement Medical and Life Benefits
	Thirteen weeks ended
	September 1, 2015		September 2, 2014
Service cost	$	1	$	1
Interest cost		12		12
Recognized actuarial loss		32		33
Net periodic benefit cost	$	45	$	46