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Forward Equity Sale Agreements	3 Months Ended
	Mar. 31, 2012
Forward Equity Sale Agreements
Forward Equity Sale Agreements	4.     Forward Equity Sale Agreements         In July 2011, the Company entered into a forward equity sale agreement with two major securities firms under which it may sell shares of common stock with an aggregate sales price of up to $300.0 million. This agreement replaced all then outstanding forward equity sale agreements. As of March 31, 2012, no forward equity sales have occurred.

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Information about forward equity sale agreements, which may include amounts outstanding and capacity to sell.

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