Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Distributions in Excess of Retained Earnings)	Total Shareholders’ Equity	Non-controlling Interests, Operating Partnership	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, 2016	$ 1,013,470	$ 94	$ 935	$ 1,011,412	$ (977)	$ (1,422)	$ 1,010,042	$ 3,428	$ 0
Balance (in shares) at Dec. 31, 2016		9,400,000	93,525,469
Changes in equity
Net proceeds from sale of stock										$ 154,732	$ 64	$ 154,668	$ 154,732	$ 163,575	$ 104	$ 163,471	$ 163,575
Net proceeds from sale of stock (in shares)											6,400,000				10,350,000
Redemption of preferred stock	(75,025)	$ (30)		(72,423)		(2,572)	(75,025)
Redemption of preferred stock (in shares)		(3,000,000)
Common stock redemption of common units			$ 1	650			651	(651)
Common stock redemption of common units (in shares)			73,322
Dividends	(86,260)					(86,019)	(86,019)	(241)
Equity-based compensation	5,887		$ 4	5,861			5,865	22
Equity-based compensation (in shares)			397,448
Shares acquired for employee withholding requirements	(961)		$ (1)	(960)			(961)
Shares acquired for employee withholding requirements (in shares)			(59,111)
Other comprehensive income (loss)	2,437				2,428		2,428	9
Net income	99,521					99,214	99,214	307
Balance at end of year at Dec. 31, 2017	1,277,376	$ 128	$ 1,043	1,262,679	1,451	9,201	1,274,502	2,874	0
Balance (in shares) at Dec. 31, 2017		12,800,000	104,287,128
Changes in equity
Redemption of preferred stock	$ (85,000)	$ (34)		(81,689)		(3,277)	(85,000)
Redemption of preferred stock (in shares)		(3,400,000)
Common stock redemption of common units			$ 1	576			577	(577)
Common stock redemption of common units (in shares)	64,126		64,126
Dividends	$ (92,225)					(92,007)	(92,007)	(218)
Equity-based compensation	6,665		$ 6	6,640			6,646	19
Equity-based compensation (in shares)			619,775
Shares acquired for employee withholding requirements	$ (2,724)		$ (2)	(2,722)			(2,724)
Shares acquired for employee withholding requirements (in shares)	(187,850)		(187,850)
Other	$ (174)			(174)			(174)
Other comprehensive income (loss)	(2,900)				(2,892)		(2,892)	(8)
Net income	91,126					90,921	90,921	205
Balance at end of year at Dec. 31, 2018	1,192,144	$ 94	$ 1,048	1,185,310	(1,441)	4,838	1,189,849	2,295	0
Balance (in shares) at Dec. 31, 2018		9,400,000	104,783,179
Changes in equity
Contribution by non-controlling interest in joint venture	$ 68,712								68,712
Common stock redemption of common units			$ 1	475	(31)		445	(445)
Common stock redemption of common units (in shares)	50,244		50,244
Dividends	$ (90,399)					(89,731)	(89,731)	(178)	(490)
Equity-based compensation	6,219		$ 4	6,201			6,205	14
Equity-based compensation (in shares)			410,432
Shares acquired for employee withholding requirements	$ (839)		$ (1)	(838)			(839)
Shares acquired for employee withholding requirements (in shares)	(74,340)		(74,340)
Other	$ (199)			(199)			(199)
Other comprehensive income (loss)	(14,596)				(14,562)		(14,562)	(34)
Net income	82,348					82,610	82,610	157	(419)
Balance at end of year at Dec. 31, 2019	$ 1,243,390	$ 94	$ 1,052	$ 1,190,949	$ (16,034)	$ (2,283)	$ 1,173,778	$ 1,809	$ 67,803
Balance (in shares) at Dec. 31, 2019		9,400,000	105,169,515