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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) Parenthetical (USD $) In Thousands	Jul. 03, 2011	Dec. 31, 2010
CONDENSED CONSOLIDATED BALANCE SHEETS Parenthetical [Abstract]
Accumulated depreciation, depletion and amortization	$ 943,336	$ 905,625

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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