Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities
Net income	$ 47,555	$ 9,966
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	97,183	70,866
Loss on early extinguishment of debt	670	0
Gain on sales of real estate – rental properties	(270)	0
Impairment of real estate	0	28,980
Equity in (earnings) losses of unconsolidated real estate joint ventures	(361)	397
Distributions of earnings from unconsolidated real estate joint ventures	125	98
Amortization of loan fees	2,895	2,760
Amortization of debt premiums/discounts	(596)	(86)
Amortization of acquired below-market leases	(5,359)	(974)
Deferred rent	(35,592)	(12,138)
Stock compensation expense	5,252	5,439
Investment gains	(1,795)	(5,891)
Investment losses	308	1,782
Changes in operating assets and liabilities:
Restricted cash	(180)	671
Tenant receivables	(235)	521
Deferred leasing costs	(16,072)	(7,083)
Other assets	(3,987)	(2,525)
Accounts payable, accrued expenses, and tenant security deposits	17,923	8,999
Net cash provided by operating activities	107,464	101,782
Investing Activities
Proceeds from sale of properties	2,827	0
Additions to real estate	(218,473)	(159,501)
Purchase of real estate	(217,643)	0
Deposits for investing activities	3,200	0
Investments in unconsolidated real estate joint ventures	0	(449)
Additions to investments	(43,974)	(22,085)
Sales of investments	5,707	10,913
Net cash used in investing activities	(468,356)	(171,122)
Financing Activities
Borrowings from secured notes payable	73,401	64,922
Repayments of borrowings from secured notes payable	(829)	(58,657)
Proceeds from issuance of unsecured senior notes payable	424,384	0
Borrowings from unsecured senior line of credit	1,139,000	555,000
Repayments of borrowings from unsecured senior line of credit	(1,167,000)	(407,000)
Repayments of borrowings from unsecured senior bank term loans	(200,000)	0
Change in restricted cash related to financing activities	(1,806)	8,316
Payment of loan fees	(4,335)	(377)
Repurchase of preferred stock	(17,934)	(25,618)
Proceeds from the issuance of common stock	217,759	25,278
Dividends on common stock	(73,705)	(56,490)
Dividends on preferred stock	(3,617)	(6,247)
Financing costs paid for sale of noncontrolling interests	0	(6,420)
Contributions from noncontrolling interests	6,888	0
Distributions to noncontrolling interests	(5,322)	(1,927)
Net cash provided by financing activities	386,884	90,780
Effect of foreign exchange rate changes on cash and cash equivalents	185	(341)
Net increase (decrease) in cash and cash equivalents	26,177	21,099
Cash and cash equivalents at beginning of period	125,032	125,098
Cash and cash equivalents at end of period	151,209	146,197
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, net of interest capitalized	30,080	14,068
Non-Cash Investing Activities
Change in accrued construction	(1,693)	29,197
Non-Cash Financing Activities
Payable for redemption of preferred stock	$ 130,000	$ 0