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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 30, 2019
Fair Value Disclosures [Abstract]  
Schedule of Fair Value of Financial Instruments
 
Fair value measurements as of
 
Fair value measurements as of
 
March 30, 2019
 
December 29, 2018
(In thousands)
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
Short-term marketable securities
$

 
$

 
$

 
$

 
$
9,624

 
$
9,624

 
$

 
$

Foreign currency forward exchange contracts, net
84

 

 
84

 

 
53

 

 
53

 

Total fair value of financial instruments
$
84

 
$

 
$
84

 
$

 
$
9,677

 
$
9,624

 
$
53

 
$