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Equity Method Investment - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		12 Months Ended
	Jul. 07, 2017	Jun. 27, 2017	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Aug. 02, 2016
Schedule Of Equity Method Investments [Line Items]
Investment		$ 950
Joint venture, consideration					$ 36,884
Losses from equity method investment			$ (13)	$ (13)
Hong Kong JV
Schedule Of Equity Method Investments [Line Items]
Losses from equity method investment			13	13
Investment in joint venture			$ 375	$ 500
Huifeng/AMVAC Innovation Co., Ltd.
Schedule Of Equity Method Investments [Line Items]
Equity investment ownership position						50.00%
Profeng Australia, Pty Ltd
Schedule Of Equity Method Investments [Line Items]
Joint venture, consideration	$ 1,900