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SUBSEQUENT EVENTS Sale of investment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage		10.00%
Proceeds from Sale of Equity Method Investments	$ 3.0

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

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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