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ACQUISITIONS AND DECONSOLIDATION (Details 3) (USD $)
In Thousands, except Share data, unless otherwise specified
1 Months Ended 12 Months Ended
Dec. 28, 2013
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Deconsolidation        
Deconsolidation of subsidiary   $ 12,011    
Realized loss on deconsolidation of subsidiary   8,559    
Maximum
       
Deconsolidation        
Ownership interest (as a percent) 50.00% 50.00%    
Delta EMD, Ltd.
       
Deconsolidation        
Supplementary contribution to Delta Pension Plan 1,500,000      
Deconsolidation of subsidiary 12,011      
Loss on deconsolidation (in dollars per share) $ 0.45      
Realized loss on deconsolidation of subsidiary 8,559      
Losses due to remeasurement of remaining investment 3,452      
Net sales included in Company's Consolidated Statements of Earnings   38,621 44,290 50,387
Net earnings included in Company's Consolidated Statements of Earnings   $ 3,535 $ 1,043 $ 3,707
Delta EMD, Ltd. | Maximum
       
Deconsolidation        
Ownership interest (as a percent) 50.00% 50.00%