Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 33,109	$ 30,013
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,733	13,014
Amortization	885	833
Straight-line rental income	(5,286)	(6,089)
Non-cash interest income on construction loan	150	0
Gain on sale of real estate	(1,654)	0
Gain on sale of marketable securities	(11)	0
Share-based compensation	979	1,464
Amortization of commitment fees	(68)	0
Loss from equity-method investee	402	229
Change in operating assets and liabilities:
Equity-method investment and other assets	110	634
Accounts payable and accrued expenses	491	(3,290)
Deferred income	(1,243)	1,756
Net cash provided by operating activities	41,297	38,564
Cash flows from investing activities:
Investment in mortgage and other notes receivable	(20,774)	(40,773)
Collection of mortgage and other notes receivable	3,985	2,619
Investment in real estate	(9,463)	(10)
Investment in real estate development	(7,640)	(3,202)
Investment in renovations of existing real estate	(453)	(1,695)
Proceeds from disposition of real estate properties	3,000	0
Proceeds from sales of marketable securities	17,049	0
Net cash used in investing activities	(14,296)	(43,061)
Cash flows from financing activities:
Net change in borrowings under revolving credit facilities	22,000	(266,500)
Proceeds from issuance of secured debt	0	78,084
Borrowings on term loan	0	225,000
Payments on term loans	(189)	(183)
Debt issuance costs	0	(1,502)
Equity offerring costs	0	(200)
Value of shares withheld from options exercised for employee tax withholding	(218)	0
Proceeds from exercise of stock options	0	(1)
Distributions to noncontrolling interest	(435)	(436)
Dividends paid to stockholders	(32,637)	(28,864)
Net cash provided by (used in) financing activities	(11,479)	5,400
(Decrease) increase in cash and cash equivalents	15,522	903
Cash and cash equivalents, beginning of year	13,286	3,287
Cash and cash equivalents, end of year	28,808	4,190
Supplemental disclosure of cash flow information:
Interest Paid	7,682	7,194
Supplemental schedule of non-cash investing and financing activities:
Accounts payable related to investments in real estate	450	893
Reclass of note balance into real estate investment	$ 0	$ 255