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Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Transactions with equity-method investees
Sales	$ 8,893	$ 8,928	$ 6,887
Purchases	9,655	5,048	3,883
Dividends and interest received	1,162	636	530
Commissions and royalties received	402	173	956
Commissions and royalties paid	$ 77	$ 88	$ 86

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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