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Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets and Goodwill (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross	$ 297,609	$ 273,696
Accumulated Amortization	99,232	87,113
Net Book Value	198,377	186,583
Gross	344,166	299,486
Net Book Value	244,934	212,373
Goodwill
Finite Lived Intangible Assets [Line Items]
Gross	46,557	25,790
Net Book Value	46,557	25,790
Product Registrations
Finite Lived Intangible Assets [Line Items]
Gross	252,786	235,684
Accumulated Amortization	89,204	79,627
Net Book Value	163,582	156,057
Trademarks
Finite Lived Intangible Assets [Line Items]
Gross	32,795	30,483
Accumulated Amortization	6,633	5,337
Net Book Value	26,162	25,146
Customer Lists
Finite Lived Intangible Assets [Line Items]
Gross	12,028	7,529
Accumulated Amortization	3,395	2,149
Net Book Value	$ 8,633	$ 5,380

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Intangible assets gross including goodwill.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 30
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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