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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Accounts receivable , net of allowance	$ 4,416	$ 3,623
Property, plant and equipment ,net of accumulated depreciation	119,547	83,481
Other intangible assets , net of accumulated amortization	$ 6,272	$ 4,336

- 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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