Acquisitions and Purchase Accounting - Pro Forma Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013
Business Combinations [Abstract]
Net sales	$ 1,703,119	$ 1,563,415
Net earnings	$ 199,354	$ 162,224
Basic	$ 3.54	$ 2.91
Diluted	$ 3.54	$ 2.89

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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