Note 11 - Pensions (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
United States Pension Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 150	$ 150	$ 450	$ 450
Interest cost	891	1,240	2,674	3,721
Expected return on plan assets	(1,340)	(1,655)	(4,020)	(4,965)
Amortization of net loss	235	85	706	254
Total cost (credit) of the plan	(64)	(180)	(190)	(540)
Net periodic benefit cost (credit)	(64)	(180)	(190)	(540)
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	290	192	813	575
Interest cost	532	195	1,014	586
Expected return on plan assets	(446)	(120)	(717)	(362)
Amortization of net loss	39	17	116	51
Total cost (credit) of the plan	415	284	1,226	850
Net periodic benefit cost (credit)	$ 415	$ 284	$ 1,226	$ 850