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Note 10 - Derivative Instruments - Fair Value of Derivative Instruments (Details) - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($)
$ in Thousands
Dec. 30, 2018
Dec. 31, 2017
Derivative Asset, Fair Value $ 2,445  
Derivative Liability, Fair Value  
Foreign Exchange Forward [Member] | Other Current Assets [Member]    
Derivative Asset, Fair Value 651  
Foreign Exchange Forward [Member] | Other Current Liabilities [Member]    
Derivative Liability, Fair Value  
Interest Rate Swap [Member] | Other Current Assets [Member]    
Derivative Asset, Fair Value 1,794 $ 904
Interest Rate Swap [Member] | Other Current Liabilities [Member]    
Derivative Liability, Fair Value