Segment Information - Reconciliation of Segment Operating Income, Depreciation and Amortization, and Capital Expenditures (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014
Segment Reporting Information [Line Items]
Operating Income	$ 43,005us-gaap_OperatingIncomeLoss	$ 39,706us-gaap_OperatingIncomeLoss
Depreciation and amortization	22,368	20,050
Capital expenditures	10,648	11,190
Total reportable segments
Segment Reporting Information [Line Items]
Operating Income	69,159	65,573
Depreciation and amortization	20,470	18,211
Capital expenditures	9,677	10,399
Unallocated corporate
Segment Reporting Information [Line Items]
Operating Income	(26,154)	(25,867)
Depreciation and amortization	1,898	1,839
Capital expenditures	$ 971	$ 791

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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