Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Defined Benefit Retirement Plan Europe [Member]
Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Service cost	$ 175	$ 211
Interest cost	2,515	2,390
Expected return on assets	(2,825)	(2,487)
Amortization of prior service cost	12	22
Recognized net actuarial (gains)/losses	153	243
Net periodic benefit cost	30	379
Salary Continuation Plan (SCP) Plan [Member]
Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Service cost	125	134
Interest cost	268	249
Amortization of prior service cost	6	12
Amortization of (gain)/loss	67	110
Net periodic benefit cost	$ 466	$ 505