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Note 5 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 29, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Restructuring Charges, Total	$ 8,500	$ 18,700	$ 13,484	$ 18,704
Integration Program [Member]
Restructuring Charges, Total			16,213	37,757
Employee Severance [Member] \| Integration Program [Member]
Restructuring Charges, Total			12,170	17,791
Accrued restructuring, beginning balance			4,026
Amounts paid or charged			(14,909)	(13,750)
Impact of currency exchange			(51)	(15)
Amounts paid or charged			(14,909)	(13,750)
Impact of currency exchange			(51)	(15)
Accrued restructuring, ending balance		4,026	1,236	4,026
Other Restructuring [Member] \| Integration Program [Member]
Restructuring Charges, Total			1,314	913
Accrued restructuring, beginning balance
Amounts paid or charged			(1,314)	(913)
Impact of currency exchange
Amounts paid or charged			(1,314)	(913)
Impact of currency exchange
Accrued restructuring, ending balance
Employee Severance and Other Exit Costs [Member] \| Integration Program [Member]
Restructuring Charges, Total			13,484	18,704
Accrued restructuring, beginning balance			4,026
Amounts paid or charged			(16,223)	(14,663)
Impact of currency exchange			(51)	(15)
Amounts paid or charged			(16,223)	(14,663)
Impact of currency exchange			(51)	(15)
Accrued restructuring, ending balance		$ 4,026	1,236	4,026
Inventory Charges [Member] \| Integration Program [Member]
Restructuring Charges, Total			$ 2,729	$ 19,053