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Segment Reporting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 01, 2012 Segment	Dec. 31, 2011
Segment Reporting Disclosure [Line Items]
Number of reportable segments	3
Total assets	$ 566,582	$ 869,290

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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