Note 4 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Restructuring Charges, Total	$ 585	$ 8,545	$ 988	$ 9,906
Integration Program [Member]
Restructuring Charges, Total			2,700	9,900
Integration Program [Member] \| Employee Severance [Member]
Accrued restructuring, beginning balance			1,236	4,026
Restructuring Charges, Total			234	9,412
Amounts paid or charged			(1,446)	(5,290)
Impact of currency exchange			(17)	26
Accrued restructuring, ending balance	7	8,174	7	8,174
Integration Program [Member] \| Other Restructuring [Member]
Accrued restructuring, beginning balance			0	0
Restructuring Charges, Total			754	494
Amounts paid or charged			(385)	(494)
Impact of currency exchange			0	0
Accrued restructuring, ending balance	369	0	369	0
Integration Program [Member] \| Employee Severance and Other Exit Costs [Member]
Accrued restructuring, beginning balance			1,236	4,026
Restructuring Charges, Total			988	9,906
Amounts paid or charged			(1,831)	(5,784)
Impact of currency exchange			(17)	26
Accrued restructuring, ending balance	$ 376	$ 8,174	$ 376	$ 8,174

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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