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Significant Accounting Policies, Judgments and Estimation Uncertainty - Summary of Estimated Useful Lives of Property Plant and Equipment (Detail)
 12 Months Ended
Dec. 31, 2018
Bottom of range [member] | Leasehold and land improvements [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 5 years
Bottom of range [member] | Greenhouses and other buildings [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 4 years
Bottom of range [member] | Greenhouse equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 3 years
Bottom of range [member] | Machinery and equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 3 years
Maximum [member] | Leasehold and land improvements [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 20 years
Maximum [member] | Greenhouses and other buildings [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 30 years
Maximum [member] | Greenhouse equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 30 years
Maximum [member] | Machinery and equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Estimated Useful Lives 12 years