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Investments in Other Entities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Peru JV
Equity method investments
Ownership interest sold		$ 6,119
Dividend distribution	1,091	1,091
Gain on sale recognized	$ 4,705	$ 4,705

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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