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Legal Proceedings - Additional Information (Detail) |  |  | 6 Months Ended
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Jun. 18, 2017 Case | Sep. 19, 2013 Case | Jun. 30, 2017 Case Employee
Commitments And Contingencies Disclosure [Abstract] |  |  |
Number of lawsuits filed |  |  | 2
Number of banana plantation workers | Employee |  |  | 2,700
Number of plaintiffs dismissed |  | 14 |
Number of plaintiffs | 57 | 22 |

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