Quarterly report pursuant to Section 13 or 15(d)

Capital and Accumulated Other Comprehensive Loss - Shares Held for Deferred Compensation Plans (Details)

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Capital and Accumulated Other Comprehensive Loss - Shares Held for Deferred Compensation Plans (Details) - USD ($)
$ in Thousands
Jul. 01, 2017
Dec. 31, 2016
Jul. 02, 2016
Equity [Abstract]      
Shares held for deferred compensation plans (in shares) 343,975 439,667 477,867
Cost of shares held for deferred compensation plans $ 4,167 $ 5,464 $ 5,754