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Fair Value Measurements - Financial Assets and Liabilities Measured on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $)
In Thousands, unless otherwise specified
Jan. 31, 2014
Assets at Fair Value:  
Total assets at fair value $ 35,902
Total liabilities at fair value 685
Salsa Lisa [Member]
  
Assets at Fair Value:  
Total liabilities at fair value 685
Limoneira [Member]
  
Assets at Fair Value:  
Total assets at fair value 35,902
Level 1 [Member]
  
Assets at Fair Value:  
Total assets at fair value 35,902
Total liabilities at fair value   
Level 1 [Member] | Salsa Lisa [Member]
  
Assets at Fair Value:  
Total liabilities at fair value   
Level 1 [Member] | Limoneira [Member]
  
Assets at Fair Value:  
Total assets at fair value 35,902
Level 2 [Member]
  
Assets at Fair Value:  
Total assets at fair value   
Total liabilities at fair value   
Level 2 [Member] | Salsa Lisa [Member]
  
Assets at Fair Value:  
Total liabilities at fair value   
Level 2 [Member] | Limoneira [Member]
  
Assets at Fair Value:  
Total assets at fair value   
Level 3 [Member]
  
Assets at Fair Value:  
Total assets at fair value   
Total liabilities at fair value 685
Level 3 [Member] | Salsa Lisa [Member]
  
Assets at Fair Value:  
Total liabilities at fair value 685
Level 3 [Member] | Limoneira [Member]
  
Assets at Fair Value:  
Total assets at fair value