Note 15 - Employee Benefit Plans (Details Textual) $ in Thousands	12 Months Ended
	Jan. 01, 2017 USD ($)	Jan. 03, 2016 USD ($)	Dec. 28, 2014 USD ($)
Defined Contribution Plan Eligibility Period	180 days
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
Foreign Pension Plan [Member]
Pension Expense	$ 1,200	$ 2,100	$ 100
Pension and Other Postretirement Defined Benefit Plans, Net Liabilities	19,400
Unfunded Status Net Of Amounts Recognized In Other Comprehensive Income	$ 48,900
Number of Defined Benefit Plans	2
Defined Benefit Plan, Indexation Benefit	$ 32,200
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year	1,300
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	21,100
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(21,800)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	(700)
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	3,000
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member]
Deferred Compensation Liability, Current and Noncurrent	28,300
Investment in Insurance Instruments	25,300
Domestic SCP [Member]
Defined Benefit Plan, Contributions by Employer	1,000
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year	400
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	1,400
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(1,900)
Defined Benefit Plan, Accumulated Benefit Obligation	29,700	23,600
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax	(500)
The 401(k) Plan [Member]
Defined Benefit Plan, Contributions by Employer	3,100	2,900	2,700
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0	$ 0	$ 0