Quarterly report pursuant to Section 13 or 15(d)

Goodwill

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Goodwill
 9 Months Ended
Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill
6. Goodwill:
The change in the carrying amount of goodwill for the nine months ended September 30, 2023 is summarized as follows:
  Ecoservices Catalyst Technologies Total
Balance as of December 31, 2022 $ 326,589  $ 76,574  $ 403,163 
Foreign exchange impact —  205  205 
Balance as of September 30, 2023 $ 326,589  $ 76,779  $ 403,368