Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit and Distributions	Total Shareholders’ Equity	Non-controlling Interests Operating Partnership state and local income tax expense	Non-controlling Interests Joint venture	Preferred Stock	Preferred Stock Preferred Stock	Preferred Stock Additional Paid-In Capital	Preferred Stock Total Shareholders’ Equity	Common Stock	Common Stock Common Stock	Common Stock Additional Paid-In Capital	Common Stock Total Shareholders’ Equity
Balance at beginning of year at Dec. 31, 2013	$ 822,378	$ 84	$ 854	$ 882,858	$ (1,379)	$ (72,577)	$ 809,840	$ 4,722	$ 7,816
Balance (in shares) at Dec. 31, 2013		8,400,000	85,402,408
Changes in equity
Common stock redemption of common units			$ 4	2,425			2,429	(2,429)
Common stock redemptions of common stock (in shares)			438,631
Common units issued for acquisition	3,685							3,685
Acquisition of non-controlling interest in joint venture	(8,232)			(415)			(415)		(7,817)
Dividends paid	(56,550)					(56,073)	(56,073)	(477)
Equity-based compensation	3,524		$ 3	3,479			3,482	42
Equity-based compensation (in shares)			321,269
Other	(156)			(156)			(156)
Other (in shares)			(12,588)
Other comprehensive loss	(371)				(367)		(367)	(4)
Net income	20,923					20,871	20,871	51	$ 1
Balance at end of year at Dec. 31, 2014	$ 785,201	$ 84	$ 861	888,191	(1,746)	(107,779)	779,611	5,590
Balance (in shares) at Dec. 31, 2014		8,400,000	86,149,720
Changes in equity
Sale of stock (in shares)	0
Common stock redemption of common units			$ 3	1,919			1,922	(1,922)
Common stock redemptions of common stock (in shares)	268,947		268,947
Dividends paid	$ (57,602)					(57,293)	(57,293)	(309)
Equity-based compensation	4,753		$ 4	4,713			4,717	36
Equity-based compensation (in shares)			411,239
Other	(763)			(763)			(763)
Other (in shares)			(36,385)
Other comprehensive loss	81				80		80	1
Net income	125,256					124,437	124,437	819
Balance at end of year at Dec. 31, 2015	$ 856,926	$ 84	$ 868	894,060	(1,666)	(40,635)	852,711	4,215
Balance (in shares) at Dec. 31, 2015		8,400,000	86,793,521
Changes in equity
Sale of stock										$ 72,290	$ 30	$ 72,260	$ 72,290	$ 89,057	$ 62	$ 88,995	$ 89,057
Sale of stock (in shares)	6,151,514										3,000,000				6,151,514
Redemption of preferred shares	$ (50,000)	$ (20)		(47,855)		(2,125)	(50,000)
Redemption of preferred shares (in shares)		(2,000,000)
Common stock redemption of common units			$ 1	1,022			1,023	(1,023)
Common stock redemptions of common stock (in shares)	119,308		119,308
Dividends paid	$ (66,713)					(66,467)	(66,467)	(246)
Equity-based compensation	4,221		$ 5	4,194			4,199	22
Equity-based compensation (in shares)			522,748
Other	(1,265)		$ (1)	(1,264)			(1,265)
Other (in shares)			(61,622)
Other comprehensive loss	693				689		689	4
Net income	108,261					107,805	107,805	456
Balance at end of year at Dec. 31, 2016	$ 1,013,470	$ 94	$ 935	$ 1,011,412	$ (977)	$ (1,422)	$ 1,010,042	$ 3,428
Balance (in shares) at Dec. 31, 2016		9,400,000	93,525,469