CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
OPERATING ACTIVITIES:
Net income	$ 85,115	$ 73,081	$ 73,399
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (continuing and discontinued operations)	35,932	29,431	25,529
Stock-based compensation expense	4,280	4,006	3,253
Impairment on real estate	766	2,250
Gain on sale of assets, net	(3,582)	(586)	(4,959)
Income from unconsolidated joint ventures	(1,138)	(1,819)
Income distributions from unconsolidated joint ventures	1,695	552
Straight-line rental income	(13,477)	(10,136)	(3,002)
Amortization of lease incentive	1,945	1,680	841
Provision for doubtful accounts	457	619	32
Non-cash interest related to contingent liabilities	684	409	18
Other non-cash items, net	1,216	985	779
(Increase) decrease in interest receivable	(5,147)	(3,939)	105
Increase in accrued interest payable	701	418	132
Net change in other assets and liabilities	(3,739)	5,390	(365)
Net cash provided by operating activities	105,708	102,341	95,762
INVESTING ACTIVITIES:
Investment in real estate properties	(74,923)	(206,340)	(11,650)
Investment in real estate developments	(42,342)	(25,929)	(34,135)
Investment in real estate capital improvements	(6,792)	(7,534)	(13,967)
Capitalized interest	(1,408)	(827)	(1,506)
Proceeds from sale of real estate, net	17,369	1,537	33,593
Investment in real estate mortgage loans receivable	(20,685)	(67,134)	(9,374)
Principal payments received on mortgage loans receivable	8,278	4,808	9,155
Investment in unconsolidated joint ventures	(1,770)	(23,042)
Payment of working capital reserve	(2,756)	(805)
Advances and originations under notes receivable	(14,969)	(1,554)	(1,263)
Principal payments received on notes receivable	100		113
Net cash used in investing activities	(139,898)	(326,820)	(29,034)
FINANCING ACTIVITIES:
Bank borrowings	123,600	291,000	37,500
Repayment of bank borrowings	(137,000)	(170,500)	(58,500)
Proceeds from issuance of senior unsecured notes	77,500	200,000	30,000
Principal payments on senior unsecured notes	(26,667)	(29,167)	(4,167)
Principal payments on bonds payable			(2,035)
Proceeds from common stock issued	78,592		24,644
Stock option exercises	159	79	1,071
Distributions paid to stockholders	(84,568)	(76,765)	(74,431)
Financing costs paid	(147)	(1,178)	(2,132)
Other	(2,230)	(1,285)	(219)
Net cash provided by (used in) financing activities	29,239	212,184	(48,269)
(Decrease) increase in cash and cash equivalents	(4,951)	(12,295)	18,459
Cash and cash equivalents, beginning of period	12,942	25,237	6,778
Cash and cash equivalents, end of period	7,991	12,942	25,237
Supplemental disclosure of cash flow information:
Interest paid	$ 24,490	$ 16,078	$ 12,188