Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 82,475	$ 78,090
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	32,983	28,429
Amortization	2,479	1,772
Straight-line rental income	(12,005)	(10,583)
Non-cash interest income on construction loan	(470)	(386)
Gain on sale of real estate	(50)	(4,582)
Loss on modification and extinguishment of debt	96	0
Non-cash write-offs due to lease transition	0	14,726
Gain on sale of marketable securities	(10,038)	(23,498)
Share-based compensation	1,865	1,230
Amortization of commitment fees	(349)	(143)
Loss from equity-method investee	0	460
Change in operating assets and liabilities:
Other assets	(2,321)	(109)
Accounts payable and accrued expenses	283	(2,211)
Net cash provided by operating activities	94,948	83,195
Cash flows from investing activities:
Investment in mortgage and other notes receivable	(30,950)	(41,673)
Collection of mortgage and other notes receivable	24,155	15,855
Investment in real estate	(128,411)	(261,610)
Investment in real estate development	(8,446)	(15,554)
Investment in renovations of existing real estate	(2,891)	(815)
Payment allocated to lease purchase option	0	6,400
Long-term escrow deposit	0	4,500
Proceeds from disposition of real estate properties	450	27,723
Proceeds from sales of marketable securities	18,182	56,449
Net cash used in investing activities	(127,911)	(230,525)
Cash flows from financing activities:
Net change in borrowings under revolving credit facilities	30,000	157,000
Payments on term loans	(394)	(381)
Value of shares withheld from options exercised for employee tax withholding	(360)	(822)
Proceeds from issuance of common shares, net	79,772	50,190
Consideration provided in convertible bond repurchase	(2,766)	0
Distributions to noncontrolling interest	0	(866)
Dividends paid to stockholders	(74,651)	(67,201)
Net cash provided by (used in) financing activities	31,601	137,920
(Decrease) increase in cash and cash equivalents	(1,362)	(9,410)
Cash and cash equivalents, beginning of year	4,832	$ 13,286
Cash and cash equivalents, end of year	$ 3,470