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Goodwill (Tables)
 9 Months Ended
Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in Carrying Amount of Goodwill
The following table shows changes in the carrying amount of goodwill.
Balance as of December 31, 2019$94,779 
Currency impact and other(1,837)
Impairments(92,942)
Balance as of September 30, 2020$—