Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments (Details 1)

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Fair Value of Financial Instruments (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance $ 18,960 $ 33,882
Change in estimated fair value 652 391
Accretion in value   1,091
Payment on liability (18,747) (17,342)
Ending Balance 828 18,960
Currency remeasurement $ (37)  
Faster S.r.l [Member]    
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Contingent consideration incurred in connection with Faster acquisition   $ 938