Investments in Unconsolidated Joint Ventures Investments in Unconsolidated Joint Ventures (Notes)	3 Months Ended
	Mar. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures Disclosure [Text Block]	Investments in Unconsolidated Joint Ventures In October 2012, Blythe Valley JV Sarl, a joint venture in which the Company held an interest, defaulted on its mortgage loan. The mortgage loan was secured by all of the operating properties and land of the joint venture. During the three months ended March 31, 2013, the lender appointed a receiver, effectively taking control of the assets securing its loan. During the year ended December 31, 2012 the joint venture recorded an impairment charge, the Company's share of which was sufficient to bring the Company's investment in the joint venture to zero.

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

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