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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 04, 2017
Mar. 29, 2016
Recent Accounting Pronouncements    
Income tax provision $ 7,264 $ 12,336
Accounting Standards Update 2016-09    
Recent Accounting Pronouncements    
Income tax provision $ (3,900)