v2.4.0.8
Bank indebtedness and Long-Term Debt (Bank indebtedness Table) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2013
Dec. 29, 2012
Line of Credit Facility [Line Items]    
Line of Credit Facility, Amount Outstanding $ 139,371 $ 131,061
Opta Minerals Inc [Member]
   
Line of Credit Facility [Line Items]    
Line of Credit Facility, Amount Outstanding 15,506 10,750
The Organic Corporation [Member]
   
Line of Credit Facility [Line Items]    
Line of Credit Facility, Amount Outstanding 54,734 44,611
U S Line Of Credit [Member] | Syndicate Lending Group [Member]
   
Line of Credit Facility [Line Items]    
Line of Credit Facility, Amount Outstanding $ 69,131 $ 75,700