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Goodwill (Tables)
 3 Months Ended
Apr. 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 three months ended April 3, 2021:
(In thousands)December 31, 2020
Foreign
Currency
Translation
April 3, 2021
Aerospace$36,648 $15 $36,663 
Test Systems21,634 — 21,634 
$58,282 $15 $58,297