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Goodwill and Other Intangible Assets - Components of Other Intangible Assets and Changes in Gross Carrying Values (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value |  | $ 49,307 | $ 37,530
Other Finite-Lived Intangible Assets, Accumulated Amortization |  | 25,239 | 22,178
Patents [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value | [1] | 7,411 | 6,947
Other Finite-Lived Intangible Assets, Accumulated Amortization | [1] | 5,713 | 5,091
Non-compete Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value | [1] | 623 | 374
Other Finite-Lived Intangible Assets, Accumulated Amortization | [1] | 270 | 242
Trademarks [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value | [1] | 4,087 | 4,087
Other Finite-Lived Intangible Assets, Accumulated Amortization | [1] | 2,905 | 2,561
Customer Lists/relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value | [1] | 21,424 | 14,539
Other Finite-Lived Intangible Assets, Accumulated Amortization | [1] | 6,842 | 5,983
Know-how [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value | [1],[2] | 14,183 | 9,543
Other Finite-Lived Intangible Assets, Accumulated Amortization | [1],[2] | 7,930 | 6,644
Supply Contract [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other Finite-Lived Intangible Assets, Gross Carrying Value |  | 1,579 | 2,040
Other Finite-Lived Intangible Assets, Accumulated Amortization |  | $ 1,579 | $ 1,657
[1] | The 2020 balances include intangible assets acquired as part of the Company’s Clariant (Mexico) and Logos Technologies acquisitions in 2020. See Note 20 for additional details.
[2] | Know-how includes intellectual property rights covering proprietary information, written formulae, trade secrets or secret processes, inventions and developmental products (whether patentable or not), discoveries, improvements, compositions, manufacturing processes, manuals, specifications and technical data

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