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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | 16. Goodwill and Other Intangible Assets: The changes in the carrying amount of goodwill for the years ended December 31, 2021 and 2020 is summarized as follows:
|  | Ecoservices |  | Catalyst Technologies |  | Total
Balance as of December 31, 2019 |  | $ | 311,892 |  |  | $ | 78,611 |  |  | $ | 390,503 |
Foreign exchange impact |  | — |  |  | 1,062 |  |  | 1,062 |
Balance as of December 31, 2020 |  | 311,892 |  |  | 79,673 |  |  | 391,565 |
Goodwill recognized (Note 6) |  | 14,778 |  |  | — |  |  | 14,778 |
Foreign exchange impact |  | — |  |  | (204) |  |  | (204) |
Balance as of December 31, 2021 |  | $ | 326,670 |  |  | $ | 79,469 |  |  | $ | 406,139 |
The Company completed its annual goodwill impairment assessments as of October 1, 2021 and 2020. For the annual assessments, the Company bypassed the option to perform the qualitative assessment and proceeded directly to performing the quantitative goodwill impairment test for each of its reporting units. The quantitative test identifies both the potential existence of impairment and the amount of impairment loss. For each of the October 1, 2021 and 2020 assessments, the Company identified two reporting units, which align with the Company’s operating segments. The Company determined the fair value of its reporting units using a split between a market approach and an income, or discounted cash flow, approach. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company estimates reporting unit market approach fair value using publicly traded comparable company values and applies the selected market multiples to each reporting unit’s trailing twelve months adjusted EBITDA. The Company estimates reporting unit income-based fair value using the discounted cash flow approach. This approach requires use of significant assumptions about future cash flows and based on management’s assessment of a number of factors. Such factors include reporting unit revenue growth rates from implementation of strategic plans, operating margin growth rates, the perpetual growth rate, and the weighted average cost of capital, as well as the reporting unit’s recent performance and management’s ability to execute on planned future strategic initiatives. Discount rate assumptions are based on an assessment of the risk inherent in those future cash flows. As of October 1, 2021, the fair values of each of the Company’s reporting units exceeded their respective carrying values and therefore, no goodwill impairment exists for the year ended December 31, 2021. In addition to the annual goodwill impairment assessment, the Company also performed the annual impairment test over its other indefinite-lived intangible assets as of October 1, 2021 and 2020. The fair values of the Company’s indefinite-lived trade names and trademarks were in excess of their carrying amounts as of the respective testing dates, and as such, there was no further impairment of the Company’s indefinite-lived intangible assets for the years ended December 31, 2021 and 2020. Gross carrying amounts and accumulated amortization for intangible assets other than goodwill are as follows:
| December 31, 2021 |  | December 31, 2020
| Gross Carrying Amount | Accumulated Amortization |  |  | Net Balance |  | Gross Carrying Amount | Accumulated Amortization |  |  | Net Balance
Technical know-how | $ | 55,922 |  | $ | (20,648) |  |  |  | $ | 35,274 |  |  | $ | 52,214 |  | $ | (17,211) |  |  |  | $ | 35,003 |
Customer relationships | 131,248 |  | (57,262) |  |  |  | 73,986 |  |  | 115,303 |  | (47,740) |  |  |  | 67,563 |
Non-compete agreements | 700 |  | (117) |  |  |  | 583 |  |  | — |  | — |  |  |  | — |
Trademarks | 7,682 |  | (2,902) |  |  |  | 4,780 |  |  | 7,709 |  | (2,399) |  |  |  | 5,310 |
Trade names | 1,600 |  | (133) |  |  |  | 1,467 |  |  | — |  | — |  |  |  | — |
Permits | 9,100 |  | (9,100) |  |  |  | — |  |  | 9,100 |  | (9,100) |  |  |  | — |
Total definite-lived intangible assets | 206,252 |  | (90,162) |  |  |  | 116,090 |  |  | 184,326 |  | (76,450) |  |  |  | 107,876 |
Indefinite-lived trade names | 25,627 |  | — |  |  |  | 25,627 |  |  | 25,670 |  | — |  |  |  | 25,670 |
In-process research and development | 3,900 |  | — |  |  |  | 3,900 |  |  | 3,900 |  | — |  |  |  | 3,900 |
Total intangible assets | $ | 235,779 |  | $ | (90,162) |  |  |  | $ | 145,617 |  |  | $ | 213,896 |  | $ | (76,450) |  |  |  | $ | 137,446 |
The Company amortizes technical know-how over periods that range from eleven years to twenty years, customer relationships over periods that range from seven years to fifteen years, trademarks over periods that range from eleven years to fifteen years, and permits over five years. In-process research and development intangible assets are considered indefinite-lived until such time as the associated projects are completed, at which time amortization commences on the assets, or abandoned, which results in the impairment of the assets. Amortization expense related to technical know-how, contracts, non-compete agreements, and permits is included in cost of goods sold in the consolidated statements of income and was $3,465, $3,111 and $3,111 for the years ended December 31, 2021, 2020 and 2019, respectively. Amortization expense related to customer relationships and trademarks is included in other operating expense, net in the consolidated statements of income and was $10,321, $8,678 and $8,678 for the years ended December 31, 2021, 2020 and 2019, respectively. Estimated future aggregate amortization expense of intangible assets is as follows:
Year |  | Amount
2022 |  | $ | 14,129 |
2023 |  | 14,129 |
2024 |  | 14,129 |
2025 |  | 14,129 |
2026 |  | 12,955 |
Thereafter |  | 46,627 |
Total estimated future aggregate amortization expense |  | $ | 116,098 |

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