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Recent Accounting Standards Adopted (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Apr. 01, 2017
Jul. 02, 2016
Jul. 01, 2017
Jul. 02, 2016
Recent Accounting Standards Adopted          
Tax benefit $ (2,012)   $ (2,502) $ (3,790) $ (4,448)
ASU 2016-09          
Recent Accounting Standards Adopted          
Tax benefit   $ 300