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Equity Method Investment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Aug. 02, 2016
Equity Method Investments [Line Items]
Gain loss from equity method investment			$ (309)	$ (580)
TyraTech Inc.
Equity Method Investments [Line Items]
Equity investment ownership position	15.11%		15.11%
Gain loss from equity method investment	$ (180)	$ (389)	$ (309)	$ (580)
Carrying value of equity investment	2,228		2,228
Quoted market value of equity investment	$ 1,450		$ 1,450
Huifeng/AMVAC Innovation Co., Ltd.
Equity Method Investments [Line Items]
Equity investment ownership position					50.00%

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB
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+ References

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