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Information about Derivative Positions (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2013
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 1,561	$ 620
Gross amounts offset in the condensed consolidated balance sheet	868	106
Net amount of liabilities in the condensed consolidated balance sheet	$ 693	$ 514

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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