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Operating Segments - Reconciliation of Total Reportable Segments' Operating Income to Consolidated Income from Continuing Operations before Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Income from equity method investment $ 954 $ 2,271
Total operating income 49,511 44,240
Interest expense (18,820) (15,905)
Interest income 150 108
Income from continuing operations before taxes 30,841 28,443
Reportable Segment [Member]
   
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Total operating income 49,633 42,655
Eliminations [Member]
   
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Total operating income $ (1,076) $ (686)