Note 17 - Employee Benefit Plans (Details Textual) $ in Thousands	12 Months Ended
	Dec. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2017 USD ($)
Defined Contribution Plan Eligibility Period		180 days
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax, Total	$ 43,610	$ 56,554
Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	4,095	2,812
Pension Cost (Reversal of Cost)	1,700	1,900	$ 1,200
Defined Benefit Plan, Funded (Unfunded) Status of Plan, Total	(36,195)	(13,382)
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax, Total	$ 36,704	47,972
Number of Defined Benefit Plans	3,000,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax, Total	$ 11,300
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	9,900
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(1,400)
Defined Benefit Plan, Indexation Benefit		32,700
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	4,200
Defined Benefit Plan, Accumulated Benefit Obligation	284,581	313,257
Foreign Plan [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI Tax, Attributable to Parent	12,000
UNITED STATES
Defined Benefit Plan, Plan Assets, Contributions by Employer	2,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax, Total	1,700
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	(1,400)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	$ (300)
Normal Retirement Age	65
Early Retirement Age	55
Minimum Period Of Service For Entitlement In Plan	15 years
Minimum Period Under Death Benefit Feature	10 years
Maximum Period For Death Benefits Payable To Designated Beneficiary	10 years
Defined Benefit Plan, Accumulated Benefit Obligation	$ 29,100	31,900
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member]
Deferred Compensation Liability, Current and Noncurrent, Total	28,700	31,900
Investment in Insurance Instruments	26,400	28,000
The 401(k) Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	3,200	3,000	3,100
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0	$ 0	$ 0