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Shareholders' Equity (Compensation Expenses Before Tax) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Compensation expense $ 440 $ 3,028 $ 1,996
Cost Of Revenues
      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Compensation expense 259 1,785 924
R&D And Marketing Expenses
      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Compensation expense 62 425 458
General And Administrative Expenses
      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Compensation expense $ 119 $ 818 $ 614