Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net income	$ 66,936	$ 16,561
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	77,070	60,080
Loss on early extinguishment of debt	3,743	41,496
Amortization of loan fees and costs	4,605	4,098
Amortization of debt premiums/discount	2,504	5,875
Amortization of acquired above and below market leases	(7,580)	(3,577)
Deferred rent	(9,592)	(7,440)
Stock compensation expense	5,105	5,389
Equity in income related to investments		(48)
Gain on sales of investments	(1,758)	(762)
Loss on sales of investments	947	21
Gain on sales of property		(24)
Changes in assets and liabilities:
Restricted cash	110	1,955
Tenant receivables	1,005	1,094
Other assets	(31,495)	(7,110)
Accounts payable, accrued expenses, and tenant security deposits	340	8,356
Net cash provided by operating activities	111,940	125,964
Investing Activities
Additions to properties	(166,378)	(219,241)
Purchase of properties	(305,030)
Proceeds from sales of properties		10,514
Change in restricted cash related to construction projects	(12)	12,706
Contributions to unconsolidated real estate entity	(2,038)	(1,550)
Transfer of cash to unconsolidated real estate entity upon deconsolidation		(154)
Additions to investments	(12,721)	(7,929)
Proceeds from investments	8,581	2,659
Net cash used in investing activities	(477,598)	(202,995)
Financing Activities
Principal reductions of secured notes payable	(16,297)	(38,646)
Principal borrowings from unsecured line of credit and unsecured term loans	1,708,317	272,000
Repayments of borrowings from unsecured line of credit	(1,631,317)	(52,000)
Payment on exchange of 8.00% unsecured convertible notes		(43,528)
Repurchase of unsecured convertible notes	(98,590)
Change in restricted cash related to financings	4,824	(8,048)
Deferred financing costs paid	(18,126)	(4,696)
Proceeds from issuance of common stock	451,539
Proceeds from exercise of stock options	1,165	1,843
Dividends paid on common stock	(49,896)	(31,006)
Dividends paid on preferred stock	(14,178)	(14,179)
Contributions by redeemable noncontrolling interests		674
Distributions to redeemable noncontrolling interests	(622)	(688)
Redemption of redeemable noncontrolling interests		(1,275)
Contributions by noncontrolling interests		655
Distributions to noncontrolling interests	(1,468)	(1,449)
Net cash provided by financing activities	335,351	79,657
Net (decrease) increase in cash and cash equivalents	(30,307)	2,626
Cash and cash equivalents at beginning of period	91,232	70,628
Cash and cash equivalents at end of period	$ 60,925	$ 73,254

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The net cash inflow or outflow from investing activity.

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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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The cash outflow for the return on capital for preferred shareholders.

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The cash outflow for loan and debt issuance costs.

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The cash outflow associated with the purchase of or advances to an 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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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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Payments to develop real estate assets is the process of adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements; and are generally classified as cash flow from investing activities.

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The cash outflow to return capital to noncontrolled interest, which generally occurs when noncontrolling shareholders reduce their ownership stake (in a subsidiary of the entity). This element does not include dividends paid to noncontrolling shareholders.

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The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity.

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The net cash inflow or outflow from cash and cash items that are not available for withdrawal or usage.

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- Definition

The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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