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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
                 
    December 31, 2011     January 1, 2011  
Land and land improvements
  $ 440     $ 440  
Building, building improvements and leasehold improvements
    118,400       103,231  
Furniture and fixtures
    88,641       86,722  
Machinery and equipment
    27,935       27,490  
Computer hardware and software
    122,521       117,686  
Construction in progress
    8,523       4,247  
 
           
 
  $ 366,460     $ 339,816  
Less: Accumulated depreciation and amortization
    (233,438 )     (210,564 )
 
           
Property, plant and equipment, net
  $ 133,022     $ 129,252