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Acquisition-Related Contingent Consideration (Tables)
9 Months Ended
Sep. 26, 2020
Business Combinations [Abstract]  
Reconciliation of Change in Fair Value Measurement of Contingent Consideration Liability The following table represents a reconciliation of the change in the fair value measurement of the contingent consideration liability for the nine months ended September 28, 2019 (in thousands):
 
    
Nine Months Ended
 
    
September 28, 2019
 
Opening balance
   $ 223  
Changes in fair value
     7  
Cash payments made
     (230
  
 
 
 
Closing balance
   $ —