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Summary of Business Sales by Product and Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales
Net sales	$ 95,962	$ 99,676
Change in net sales	$ (3,714)
Percentage change in net sales	(4.00%)
Gross profit:
Gross profit	$ 38,381	$ 41,702
Change in gross profit	$ (3,321)
Percentage change in net sales	(8.00%)
Gross margin:
Gross margin	40.00%	42.00%
Change in gross profit	$ (3,321)
US
Net sales
Net sales	61,355	$ 61,537
Change in net sales	$ (182)
Percentage change in net sales	0.00%
Gross profit:
Gross profit	$ 28,964	$ 29,668
Change in gross profit	$ (704)
Percentage change in net sales	(2.00%)
Gross margin:
Gross margin	47.00%	48.00%
Change in gross profit	$ (704)
US | Crop
Net sales
Net sales	50,362	$ 50,270
Change in net sales	$ 92
Percentage change in net sales	0.00%
Gross profit:
Gross profit	$ 24,245	$ 23,822
Change in gross profit	$ 423
Percentage change in net sales	2.00%
Gross margin:
Gross margin	48.00%	47.00%
Change in gross profit	$ 423
US | Non-Crop
Net sales
Net sales	10,993	$ 11,267
Change in net sales	$ (274)
Percentage change in net sales	(2.00%)
Gross profit:
Gross profit	$ 4,719	$ 5,846
Change in gross profit	$ (1,127)
Percentage change in net sales	(19.00%)
Gross margin:
Gross margin	43.00%	52.00%
Change in gross profit	$ (1,127)
International
Net sales
Net sales	34,607	$ 38,139
Change in net sales	$ (3,532)
Percentage change in net sales	(9.00%)
Gross profit:
Gross profit	$ 9,417	$ 12,034
Change in gross profit	$ (2,617)
Percentage change in net sales	(22.00%)
Gross margin:
Gross margin	27.00%	32.00%
Change in gross profit	$ (2,617)

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