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Contingent Consideration
 12 Months Ended
Dec. 28, 2019
Commitments and Contingencies Disclosure [Abstract]  
Contingent Consideration Contingent Consideration
The following table summarizes the changes in the carrying value of estimated contingent consideration:
 
December 28, 2019
 
December 29, 2018
Contingent consideration, beginning of the year
$
4,698

 
$
1,890

Additions for acquisitions
1,316

 
3,112

Reduction of liability for payments made
(1,938
)
 
(728
)
Decrease (increase) of liability related to re-measurement of fair value
(74
)
 
424

Total contingent consideration, end of the period
4,002

 
4,698

Current portion of contingent consideration
1,954

 
1,845

Contingent consideration, less current portion
$
2,048

 
$
2,853