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Income Taxes (Details Narrative 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 22, 2017
Dec. 30, 2017
Dec. 31, 2016
Dec. 26, 2015
Deferred tax assets related to future tax benefit on net operating loss carryforward   $ 8,799    
Net operating loss carryforwards   70,419    
Net unrecognized tax benefits   127,306 $ 109,667 $ 93,654
Accrued interest and penalties on unrecognized tax benefits   5,605 3,901 2,479
Increase (decrease) unrecognized tax benefits   1,704 1,422 320
Reduction in income tax expense   (18,168) $ 11,088 6,664
Corporate income tax rate 21.00%   35.00%  
Minimum [Member]        
Reserves for certain unrecognized tax benefits   20,000    
Maximum [Member]        
Reserves for certain unrecognized tax benefits   25,000    
Various Other Jurisdictions [Member]        
Net operating loss carryforwards   9,608    
Reduction in income tax expense   17,918 $ 11,151 $ 6,971
Foreign Tax Authority [Member] | Tax and Customs Administration, Netherlands [Member]        
Net operating loss carryforwards   $ 5,234    
Net operating loss carryforwards expiration year   2026    
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member]        
Net operating loss carryforwards   $ 43,210    
Income tax examination year   2012    
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member] | Minimum [Member]        
Net operating loss carryforwards expiration year   2023    
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member] | Maximum [Member]        
Net operating loss carryforwards expiration year   2024    
Foreign Tax Authority [Member] | Finnish Tax Administration [Member]        
Net operating loss carryforwards   $ 1,757    
Foreign Tax Authority [Member] | Finnish Tax Administration [Member] | Minimum [Member]        
Net operating loss carryforwards expiration year   2025    
Foreign Tax Authority [Member] | Finnish Tax Administration [Member] | Maximum [Member]        
Net operating loss carryforwards expiration year   2027    
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]        
Net operating loss carryforwards   $ 10,610    
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Minimum [Member]        
Net operating loss carryforwards expiration year   2022    
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Maximum [Member]        
Net operating loss carryforwards expiration year   2037