Note 12 - Pensions (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
United States Pension Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 150	$ 150
Interest cost	891	1,240
Expected return on plan assets	(1,340)	(1,655)
Amortization of net loss	236	85
Total cost of the plan	(63)	(180)
Net periodic benefit cost	(63)	(180)
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	255	192
Interest cost	183	195
Expected return on plan assets	(74)	(121)
Amortization of net loss	39	17
Total cost of the plan	403	283
Net periodic benefit cost	$ 403	$ 283