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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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