v2.4.0.6
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 29, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 The components and classification of stock-based compensation expense were as follows (in thousands):
             
  Three Months Ended Six Months Ended
   June 29,  July 1,  June 29,  July 1,
   2012  2011  2012  2011
 Stock options$ 689 $ 629 $ 1,367 $ 1,163
 Restricted stock and units  1,527   1,091   3,036   2,084
 401(k) stock contribution  1,130   1,328   1,130   2,548
 Total stock-based compensation expense$ 3,346 $ 3,048 $ 5,533 $ 5,795
             
 Cost of sales$ 1,104 $ 1,076 $ 1,367 $ 2,081
 Selling, general and administrative  1,909   1,623   3,726   3,112
 Research, development and engineering  333   349   440   602
 Total stock-based compensation expense$ 3,346 $ 3,048 $ 5,533 $ 5,795
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 The weighted average fair value and assumptions used to value options granted are as follows:
  Six Months Ended
   June 29,  July 1,
   2012  2011
 Weighted average fair value$ 8.19 $ 9.42
 Risk-free interest rate 0.83%  2.04%
 Expected volatility 40%  40%
 Expected life (in years)  5   5
 Expected dividend yield 0%  0%
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
 The following table summarizes time-vested stock option activity:
      Number of Time-Vested Stock Options  Weighted Average Exercise Price  Weighted Average Remaining Contractual Life (In Years)  Aggregate Intrinsic Value (In Millions)
 Outstanding atDecember 30, 2011  1,558,771 $ 23.42      
  Granted  377,826   22.18      
  Exercised  (13,316)   21.44      
  Forfeited or expired  (56,953)   24.05      
 Outstanding atJune 29, 2012  1,866,328 $ 23.17   6.4 $ 2.1
 Exercisable atJune 29, 2012  1,289,902 $ 23.36   5.3 $ 1.8

 The following table summarizes performance-vested stock option activity:
      Number of Performance-Vested Stock Options  Weighted Average Exercise Price  Weighted Average Remaining Contractual Life (In Years)  Aggregate Intrinsic Value (In Millions)
 Outstanding atDecember 30, 2011  478,364 $ 24.44      
  Exercised (5,353)   22.11      
  Forfeited or expired  (177,733)   26.49      
 Outstanding atJune 29, 2012  295,278 $ 23.25  4.8 $0.1
 Exercisable atJune 29, 2012  295,278 $ 23.25  4.8 $0.1
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
 The following table summarizes time-vested restricted stock and unit activity:
      Time-Vested Activity  Weighted Average Fair Value
 Nonvested atDecember 30, 2011  69,942 $ 22.69
  Granted  80,402   23.41
  Vested  (19,142)   21.86
  Forfeited  (4,679)   22.04
 Nonvested atJune 29, 2012  126,523 $ 23.29

 The following table summarizes performance-vested restricted stock and unit activity:
      Performance-Vested Activity  Weighted Average Fair Value
 Nonvested atDecember 30, 2011  529,743 $ 16.68
  Granted  332,918   15.30
  Vested  (7,500)   24.62
  Forfeited  (38,413)   15.74
 Nonvested atJune 29, 2012  816,748 $ 16.09