Note 4 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Restructuring Charges, Total	$ 1,361
Integration Program [Member]
Accrued restructuring, beginning balance	4,026
Restructuring Charges, Total	1,361
Amounts paid or charged	(1,637)
Impact of currency exchange	4
Accrued restructuring, ending balance	3,754
Employee Severance [Member] \| Integration Program [Member]
Accrued restructuring, beginning balance	4,026
Restructuring Charges, Total	753
Amounts paid or charged	(1,029)
Impact of currency exchange	4
Accrued restructuring, ending balance	3,754
Other Restructuring [Member] \| Integration Program [Member]
Accrued restructuring, beginning balance
Restructuring Charges, Total	608
Amounts paid or charged	(608)
Impact of currency exchange
Accrued restructuring, ending balance	$ 0

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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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

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