XML 20 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Financial Instruments Measured at Fair Value - AFS (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 29, 2014
Dec. 31, 2013
Marubun [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available For Sale Investment Ownership Percentage 8.40%  
Cost basis $ 10,016 $ 10,016
Unrealized holding gain 1,957 2,709
Available-for-sale securities 11,973 12,725
WPG [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available For Sale Investment Ownership Percentage 1.90%  
Cost basis 10,798 10,798
Unrealized holding gain 26,521 24,903
Available-for-sale securities 37,319 35,701
Mutual Funds [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Cost basis 15,690 15,614
Unrealized holding gain 5,928 5,817
Available-for-sale securities $ 21,618 $ 21,431