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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Deferred Tax Liabilities, Undistributed Foreign Earnings $ 1,934  
Effective tax rate benefit, continuing operations 376.70%  
Effective Income Tax Rate, Continuing Operations   31.80%
Federal statutory income tax rate 35.00%