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Acquisitions - Additional Information (Detail) |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 17, 2019 USD ($) | Mar. 26, 2018 USD ($) ft² T | Dec. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Paid from cash on hand |  |  |  | $ 9,000,000 | $ 22,852,000 | $ 4,339,000
Goodwill |  |  | $ (22,954,000) | (26,086,000) | (22,954,000) | (25,118,000)
Surfactants [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  | (17,054,000) | (20,197,000) | $ (17,054,000) | $ (19,160,000)
2019 Acquisition [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Paid from cash on hand | $ 9,000,000 |  |  |  |  |
Goodwill | (3,497,000) |  |  |  |  |
2019 Acquisition [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Product Know-how [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets identified related to acquisition | (1,500,000) |  |  |  |  |
2019 Acquisition [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Customer Relationships [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets identified related to acquisition | $ (3,200,000) |  |  |  |  |
2019 Acquisition [Member] | Minimum [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Product Know-how [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Weighted average amortization periods of identifiable intangibles assets | 13 years |  |  |  |  |
2019 Acquisition [Member] | Minimum [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Customer List [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Weighted average amortization periods of identifiable intangibles assets | 22 years |  |  |  |  |
2019 Acquisition [Member] | Maximum [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Product Know-how [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Weighted average amortization periods of identifiable intangibles assets | 14 years |  |  |  |  |
2019 Acquisition [Member] | Maximum [Member] | Oilfield Demulsifier Product Line [Member] | Surfactants [Member] | Customer List [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Weighted average amortization periods of identifiable intangibles assets | 25 years |  |  |  |  |
2018 Acquisition [Member] | BASF Mexicana, S.A. DE C.V. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Total assets acquired |  | $ 22,852,000 |  |  |  |
2018 Acquisition [Member] | BASF Mexicana, S.A. DE C.V. [Member] | Surfactants [Member] | Ecatepec, Mexico [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Paid from cash on hand |  | 21,475,000 |  |  |  |
Intangible assets identified related to acquisition |  | $ 0 |  |  |  |
Incremental inventory and related value-added taxes |  |  |  | 1,377,000 |  |
Capacity of production facility expected to be acquired | T |  | 50,000 |  |  |  |
Warehouse space, laboratory and office space currently expected to be acquired | ft² |  | 124,000 |  |  |  |
Total assets acquired |  |  |  | $ 22,852,000 |  |
Payment of incremental inventory and related value-added taxes |  |  | $ 1,377,000 |  |  |

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