Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	[1]	Sep. 29, 2018	Sep. 30, 2017	[1]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance as of December 30, 2017				$ 13,917
Dividends paid to noncontrolling interests				(592)
Net income attributable to noncontrolling interests	$ 571	$ 496		1,487	$ 1,164
Other comprehensive income attributable to noncontrolling interests, net of tax:
Foreign currency translation				(390)
Balance as of September 29, 2018	$ 14,422			$ 14,422

[1] The Condensed Consolidated Statements of Income for the quarter and nine months ended September 30, 2017 have been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The components of net periodic benefit cost (income) other than the service cost component are included in other income (expense), net in the Condensed Consolidated Statements of Income. Refer to Note 1 for further discussion.