XML 113 R36.htm IDEA: XBRL DOCUMENT v2.4.0.8
Financial Instruments and Derivatives - Additional Information (Detail) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
Dec. 31, 2012
Financial Instruments and Fair Value [Line Items]          
Available-for-sale securities, realized gain $ 100,000 $ 300,000 $ 300,000 $ 600,000  
Fair market value of investments with unrealized losses 328,151,000   328,151,000   59,100,000
Available-for-sale marketable securities, fair market value of investments with unrealized losses greater than one year 2,100,000   2,100,000    
Available-for-sale marketable securities, fair market value of investments with unrealized losses less than one year 326,100,000   326,100,000    
Gain (loss) on foreign currency transactions (1,800,000) (4,600,000) 2,500,000 (400,000)  
Foreign Exchange Contract
          
Financial Instruments and Fair Value [Line Items]          
Notional amount of foreign exchange contracts hedging monetary assets and liabilities $ 54,000,000   $ 54,000,000   $ 64,100,000