Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Defined Benefit Retirement Plan Europe [Member]
Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Service cost	$ 188	$ 209	$ 363	$ 420
Interest cost	2,849	2,366	5,364	4,756
Expected return on assets	(3,195)	(2,463)	(6,020)	(4,950)
Amortization of prior service cost	13	22	25	44
Recognized net actuarial losses	175	241	328	484
Net periodic benefit cost	30	375	60	754
Salary Continuation Plan (SCP) Plan [Member]
Note 6 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Service cost	125	134	250	267
Interest cost	268	249	535	499
Amortization of prior service cost	6	12	12	24
Amortization of loss	67	110	133	221
Net periodic benefit cost	$ 466	$ 505	$ 930	$ 1,011