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Enterprise-Wide Disclosures - Revenue and Long-Lived Assets Related to Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 30, 2012
Sep. 30, 2012
Jul. 01, 2012
Apr. 01, 2012
Jan. 01, 2012
Oct. 02, 2011
Jul. 03, 2011
Apr. 03, 2011
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
SALES TO UNAFFILIATED CUSTOMERS                      
Net sales $ 249,595 $ 242,863 $ 229,546 $ 210,016 $ 244,478 $ 248,721 $ 240,566 $ 219,280 $ 932,020 $ 953,045 $ 862,314
LONG-LIVED ASSETS                      
Total long-lived assets 165,725       177,925       165,725 177,925  
United States [Member]
                     
SALES TO UNAFFILIATED CUSTOMERS                      
United States                 421,355 400,569 365,568
LONG-LIVED ASSETS                      
United States 78,661       73,770       78,661 73,770  
United Kingdom [Member]
                     
SALES TO UNAFFILIATED CUSTOMERS                      
Revenues from unaffiliated customers                 83,373 83,401 92,606
LONG-LIVED ASSETS                      
Long lived assets for foreign countries 10,093       22,399       10,093 22,399  
Australia [Member]
                     
SALES TO UNAFFILIATED CUSTOMERS                      
Revenues from unaffiliated customers                 87,115 105,871 98,322
LONG-LIVED ASSETS                      
Long lived assets for foreign countries 11,895       26,807       11,895 26,807  
Other foreign countries [Member]
                     
SALES TO UNAFFILIATED CUSTOMERS                      
Revenues from unaffiliated customers                 340,177 363,204 305,818
LONG-LIVED ASSETS                      
Long lived assets for foreign countries 16,365       15,667       16,365 15,667  
Netherlands [Member]
                     
LONG-LIVED ASSETS                      
Long lived assets for foreign countries 33,122       22,659       33,122 22,659  
China [Member]
                     
LONG-LIVED ASSETS                      
Long lived assets for foreign countries $ 15,589       $ 16,623       $ 15,589 $ 16,623