Note 12 - Benefit Plans (Details) - Benefit Plan Related Information (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 110,593	$ 107,576
Service cost	1,344	1,201
Interest cost	4,941	5,606
Curtailment (gain)		(87)
Net actuarial (gain) loss	(8,743)	22,895
Benefits paid	(6,831)	(22,767)
Acquisition	26,904
Effect of exchange rate movements	2,464	271
Fair value of plan assets at end of year	126,225	88,901
Net amount recognized/(unfunded status)	(8,528)	(21,692)
Prepaid benefit cost		646
Accrued benefit liability	(8,528)	(22,338)
Net liability recognized	(8,528)	(21,692)
Accumulated other comprehensive loss	23,689	32,698
Benefits paid directly by company	(112)	(725)
Acquisition	31,041
Settlement (gain)		(3,525)
Effect of exchange rate movements	2,520	419
Benefit obligation at end of year	134,753	110,593
Fair value of plan assets at beginning of year	88,901	92,479
Actual return on plan assets	5,679	8,918
Employer contributions	9,109	10,000
United States Pension Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	95,187	94,383
Service cost	600	600	560
Interest cost	3,565	4,962	5,110
Net actuarial (gain) loss	(9,854)	20,333
Benefits paid	(5,076)	(21,566)
Fair value of plan assets at end of year	83,748	77,949	81,201
Net amount recognized/(unfunded status)	(674)	(17,238)
Accrued benefit liability	(674)	(17,238)
Net liability recognized	(674)	(17,238)
Accumulated other comprehensive loss	18,095	29,406
Settlement (gain)		(3,525)
Benefit obligation at end of year	84,422	95,187	94,383
Fair value of plan assets at beginning of year	77,949	81,201
Actual return on plan assets	5,875	8,314
Employer contributions	5,000	10,000
Foreign Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	15,406	13,193
Service cost	744	601	429
Interest cost	1,376	644	632
Curtailment (gain)		(87)
Net actuarial (gain) loss	1,111	2,562
Benefits paid	(1,755)	(1,201)
Acquisition	26,904
Effect of exchange rate movements	2,464	271
Fair value of plan assets at end of year	42,477	10,952	11,278
Net amount recognized/(unfunded status)	(7,854)	(4,454)
Prepaid benefit cost		646
Accrued benefit liability	(7,854)	(5,100)
Net liability recognized	(7,854)	(4,454)
Accumulated other comprehensive loss	5,594	3,292
Benefits paid directly by company	(112)	(725)
Acquisition	31,041
Effect of exchange rate movements	2,520	419
Benefit obligation at end of year	50,331	15,406	13,193
Fair value of plan assets at beginning of year	10,952	11,278
Actual return on plan assets	(196)	604
Employer contributions	$ 4,109