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Summary of Business Sales by Product and Geographic Location (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Net sales |  |
Net sales | $ 99,676 | $ 104,108
Change in net sales | $ (4,432) |
Percentage change in net sales | (4.00%) |
Gross profit: |  |
Total gross profit | $ 41,702 | 41,051
Change in gross profit | $ 651 |
Percentage change in gross profit | (1.00%) |
Crop |  |
Net sales |  |
Net sales | $ 87,388 |
US |  |
Net sales |  |
Net sales | 61,537 | 69,236
Change in net sales | $ (7,699) |
Percentage change in net sales | (11.00%) |
Gross profit: |  |
Total gross profit | $ 29,668 | 30,872
Change in gross profit | $ (1,204) |
Percentage change in gross profit | (6.00%) |
US | Crop |  |
Net sales |  |
Net sales | $ 50,270 | 57,344
Change in net sales | $ (7,074) |
Percentage change in net sales | (12.00%) |
Gross profit: |  |
Total gross profit | $ 23,822 | 25,060
Change in gross profit | $ (1,238) |
Percentage change in gross profit | (4.00%) |
US | Non Crop |  |
Net sales |  |
Net sales | $ 11,267 | 11,892
Change in net sales | $ (625) |
Percentage change in net sales | (5.00%) |
Gross profit: |  |
Total gross profit | $ 5,846 | 5,812
Change in gross profit | $ 34 |
Percentage change in gross profit | (16.00%) |
International |  |
Net sales |  |
Net sales | $ 38,139 | 34,872
Change in net sales | $ 3,267 |
Percentage change in net sales | 9.00% |
Gross profit: |  |
Total gross profit | $ 12,034 | $ 10,179
Change in gross profit | $ 1,855 |
Percentage change in gross profit | 17.00% |

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