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Income Taxes (Tables)
3 Months Ended
Apr. 04, 2015
Income Taxes [Abstract]  
Unrecognized Tax Benefits Roll Forward

The following is a summary of the activity of the Company's unrecognized tax benefits for the three months ended April 4, 2015 and March 29, 2014 (in thousands):

   April 4, 2015 March 29, 2014
Balance at the beginning of the period $ 19,596 $ 24,716
 Net changes in uncertain tax benefits   933   (812)
Balance at the end of the period $ 20,529 $ 23,904