CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Payments of Ordinary Dividends, Common Stock	$ 14,766	$ 14,643
Payments for Capital Improvements	13,568	12,504
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	6,844	5,618
Gain (Loss) on Disposition of Business	25	0
Increase (Decrease) in Lease Acquisition Costs	2,172	1,667
Leasehold Improvements Cash Flow	4	390
Adjustments to reconcile net loss to net cash provided by operating activities:
Net loss	(3,712)	(486)
Depreciation	31,209	29,632
Amortization	3,458	2,883
Straight-line rent adjustments	(823)	(738)
Provision for doubtful accounts	1,075	573
Amortization of deferred compensation	1,924	1,497
Gain (Loss) on Sale of Properties		57
Equity in income of partnerships	(3,138)	(3,736)
Proceeds from Equity Method Investment, Distribution	2,742	3,771
Net cash provided by operating activities	31,027	39,407
Change in assets and liabilities:
Net change in other assets	1,061	8,411
Net change in other liabilities	(21)	(2,457)
Cash flows from investing activities:
Additions to construction in progress	(3,119)	(16,178)
Proceeds from Sale of Real Estate Held-for-investment		41,736
Equity Method Investment, Realized Gain (Loss) on Disposal	(2,773)	0
Proceeds from Sale of Equity Method Investments	19,727
Proceeds from Equity Method Investment, Distribution, Return of Capital	123,000
Net cash provided by (used in) investing activities	109,968	(7,155)
Payments to Acquire Interest in Subsidiaries and Affiliates	13,896	18,152
Cash flows from financing activities:
Proceeds from Issuance of Preferred Stock and Preference Stock		166,345
Proceeds from (Repayments of) Lines of Credit	(53,000)	(12,000)
Repayments of Other Long-term Debt	3,832	3,693
Payments to Noncontrolling Interests	1,737	1,746
Proceeds from (Repayments of) Secured Debt	10,185	(150,000)
Payment of deferred financing costs	(436)	(11)
Value of shares of beneficial interest issued	484	344
Value of shares retired under equity incentive plans, net of shares issued	(679)	(1,291)
Net cash used in financing activities	(70,625)	(22,313)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	70,370	9,939
Cash, cash equivalents, and restricted cash, end of period	89,213
Restricted Cash and Cash Equivalents	$ 104,323	$ 39,804