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Goodwill
 3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
The following table presents changes in the carrying value of goodwill and the activity by reportable segment for the three months ended March 31, 2021 (in thousands):
Industrial TechnologiesDefense TechnologiesConsolidated
Balance, December 31, 2020$651,439 $742,925 $1,394,364 
Currency translation adjustments(6,773)(744)(7,517)
Balance, March 31, 2021$644,666 $742,181 $1,386,847 
See Note 18, "Business Acquisitions and Combinations" for additional information on goodwill from acquisitions.