XML 83 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Accounting Policies - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Dec. 29, 2012
Summary Of Accounting Policies [Line Items]          
Investments in unconsolidated affiliates $ 13,400,000   $ 13,400,000   $ 13,500,000
Equity investment dividends     0 0  
Purchases from unconsolidated affiliates $ 3,900,000 $ 3,600,000 $ 7,700,000 $ 8,100,000  
Minimum [Member]
         
Summary Of Accounting Policies [Line Items]          
Percentage of ownership interest under equity method accounting 20.00%   20.00%    
Maximum [Member]
         
Summary Of Accounting Policies [Line Items]          
Percentage of ownership interest under equity method accounting 50.00%   50.00%