Note 7 - Employee Benefit Plans (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Defined Benefit Retirement Plan (Europe) [Member]
Note 7 - Employee Benefit Plans (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost	$ 212	$ 110	$ 632	$ 339
Interest cost	2,391	2,525	7,147	7,611
Expected return on assets	(2,488)	(2,797)	(7,438)	(8,435)
Amortization of prior service cost	22	12	66	38
Recognized net actuarial losses	243	230	727	690
Net periodic benefit cost	380	80	1,134	243
Salary Continuation Plan (SCP) [Member]
Note 7 - Employee Benefit Plans (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost	134	113	401	339
Interest cost	249	254	748	761
Amortization of prior service cost	12	12	36	36
Amortization of loss	110	67	331	201
Net periodic benefit cost	$ 505	$ 446	$ 1,516	$ 1,337