CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES
Net Income	$ 80,723	$ 36,821
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization from continuing operations	57,756	54,358
Stock-based compensation expense	3,959	5,185
Gain on sales of real estate investments and non-operating real estate	(43,046)	(3,026)
Changes in operating assets and liabilities:
Accrued income and other assets	2,061	2,544
Accounts payable, accrued expenses and prepaid rent	5,221	6,765
Other	278	(87)
NET CASH PROVIDED BY OPERATING ACTIVITIES	106,952	102,560
INVESTING ACTIVITIES
Real estate development	(94,781)	(75,768)
Purchases of real estate	24,955	0
Real estate improvements	(17,184)	(17,753)
Proceeds from sales of real estate investments and non-operating real estate	77,298	5,156
Repayments on mortgage loans receivable	91	87
Changes in accrued development costs	7,469	159
Changes in other assets and other liabilities	(11,995)	(6,333)
NET CASH USED IN INVESTING ACTIVITIES	(64,057)	(94,452)
FINANCING ACTIVITIES
Proceeds from unsecured bank credit facilities	444,314	273,253
Repayments on unsecured bank credit facilities	(388,569)	(229,508)
Repayments on secured debt	(89,295)	(73,031)
Proceeds from Unsecured Debt	105,000	75,000
Repayments on Unsecured Debt	(80,000)	0
Debt issuance costs	(1,165)	(1,767)
Distributions paid to stockholders (not including dividends accrued on unvested restricted stock)	(60,418)	(56,549)
Proceeds from common stock offerings	29,643	6,233
Proceeds from dividend reinvestment plan	179	189
Other	(2,599)	(1,597)
NET CASH USED IN FINANCING ACTIVITIES	(42,910)	(7,777)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(15)	331
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	48	11
CASH AND CASH EQUIVALENTS AT END OF PERIOD	33	342
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest, net of amount capitalized of $3,737 and $3,903 for 2016 and 2015, respectively	$ 25,977	$ 25,958