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Derivative Financial Instruments - Financial Instrument (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 01, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Dec. 31, 2016
Derivative financial instrument          
Reclassification of unrealized gains included in net income $ 1,800 $ (64) $ 1,808 $ (191)  
Other assets, net          
Derivative financial instrument          
Fair value of interest rate swap         $ 1,808