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Goodwill (Tables)
 6 Months Ended
Jul. 03, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Changes in Carrying Amount of Goodwill The following table summarizes the changes in the carrying amount of goodwill for the six months ended July 3, 2021:
(In thousands)December 31, 2020
Foreign
Currency
Translation
July 3, 2021
Aerospace$36,648 $47 $36,695 
Test Systems21,634 — 21,634 
$58,282 $47 $58,329