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Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Mar. 25, 2010	Mar. 24, 2010	Feb. 19, 2013 Subsequent Event [Member] GeoRXT [Member]
Subsequent Event [Line Items]
Percentage of equity method investment	49.00%	49.00%	49.00%	30.00%
Purchase price of joint venture				$ 1.5
Provided loan				$ 8.0

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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