Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Summary of Sales and Amounts Included in Income from Operations of Subsidiary in Consolidated Financial Statements of Company (Detail)

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Acquisitions - Summary of Sales and Amounts Included in Income from Operations of Subsidiary in Consolidated Financial Statements of Company (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Peco, Inc [Member]
Loans At Acquisition Date [Line Items]          
Sales $ 89,681 $ 68,899 $ 234,481 $ 199,026 $ 15,698
Operating Income $ 12,352 $ 7,655 $ 31,394 $ 24,696 $ 30