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Fair value measurements (Details 1) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Apr. 30, 2013
Reconciliation of contingent consideration  
Beginning Balance $ 3,179
Interest 83
Revalue Adjustment 1,444
Ending Balance 4,706
Salsa Lisa contingent consideration [Member]
 
Reconciliation of contingent consideration  
Beginning Balance 857
Interest 24
Revalue Adjustment   
Ending Balance 881
RFG contingent consideration [Member]
 
Reconciliation of contingent consideration  
Beginning Balance 2,322
Interest 59
Revalue Adjustment 1,444
Ending Balance $ 3,825