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Business Acquisitions - Additional Information (Detail) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 10, 2019 USD ($) Business | Dec. 31, 2018 USD ($) Productline | Mar. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 25,790 | $ 39,159
Agrovant and Defensive |  |  |
Business Acquisition [Line Items] |  |  |
Number of businesses acquired | Business | 2 |  |
Business combination, cash consideration | $ 20,682 |  |
Business combination, cash acquired | 982 |  |
Business combination, deferred consideration paid | 2,645 |  |
Business combination, liabilities assumed | 17,040 |  |
Business combination, liabilities assumed, tax | 10,098 |  |
Business combination, total consideration | 40,370 |  |
Goodwill | 14,211 |  |
Business combination, preliminary allocation of purchase price, working capital | 8,072 |  |
Business combination, preliminary allocation purchase price, fixed assets | 404 |  |
Business combination, preliminary allocation purchase price, indemnification assets | 3,385 |  |
Agrovant and Defensive | Product Registrations and Product Rights |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, preliminary allocation purchase price of intangible assets | 9,451 |  |
Agrovant and Defensive | Trade Name |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, preliminary allocation purchase price of intangible assets | 1,733 |  |
Agrovant and Defensive | Customer Relationships |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, preliminary allocation purchase price of intangible assets | $ 3,114 |  |
E.I DuPont et Nemour | Product Lines Acquisition |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, cash consideration |  | $ 3,564 |
Business combination, number of product lines acquired | Productline |  | 1 |

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