Annual report pursuant to Section 13 and 15(d)

Employee Benefits (Details)

v2.4.0.8
Employee Benefits (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 4,066 $ 4,309 $ 5,026
DefinedContributionBenefitPlanSupplementalPensionBenefitsAmount 327 330 336
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 100.00%    
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP 91,158 132,398  
Defined Benefit Plan Percentage of Employer Contribution Equal to Wages 10.00%    
Employee Stock Ownership Plan (ESOP), Compensation Expense 2,881 3,011 3,849
Defined Benefit Contribution Plan Foreign Operations Expenses Recognized 551 633 795
Defined Benefit Plan Compensation Expense $ 70 $ 44 $ 45
United Kingdom [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Stock Issued During Period, Shares, Employee Stock Ownership Plan 7,366 13,977  
Germany [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Stock Issued During Period, Shares, Employee Stock Ownership Plan 7,015 13,284