Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Deficit) and Distributions	Total Stockholders’ Equity	Non-controlling Interests, Operating Partnership	Non-controlling Interests, Joint Venture
Beginning balance at Dec. 31, 2018	$ 1,192,144	$ 94	$ 1,048	$ 1,185,310	$ (1,441)	$ 4,838	$ 1,189,849	$ 2,295	$ 0
Beginning balance (in shares) at Dec. 31, 2018		9,400,000	104,783,179
Changes in equity
Common stock redemption of common units			$ 1	436	(28)		409	(409)
Common stock redemption of common units (in shares)	46,076		46,076
Dividends	$ (67,243)					(67,103)	(67,103)	(140)
Equity-based compensation	4,766		$ 4	4,751			4,755	11
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	$ (158)			(158)			(158)
Other comprehensive income (loss)	(18,972)				(18,926)		(18,926)	(46)
Net income (loss)	73,595					73,368	73,368	150	77
Ending balance at Sep. 30, 2019	1,197,057	$ 94	$ 1,052	1,189,501	(20,395)	11,103	1,181,355	1,861	13,841
Ending balance (in shares) at Sep. 30, 2019		9,400,000	105,165,347
Beginning balance at Jun. 30, 2019	1,197,057	$ 94	$ 1,051	1,187,715	(16,236)	22,179	1,194,803	2,254	0
Beginning balance (in shares) at Jun. 30, 2019		9,400,000	105,126,626
Changes in equity
Contribution by non-controlling interests in joint venture	13,764								13,764
Common stock redemption of common units			$ 1	383	(28)		356	(356)
Common stock redemption of common units (in shares)			40,000
Dividends	(22,656)					(22,610)	(22,610)	(46)
Equity-based compensation	1,450			1,447			1,447	3
Equity-based compensation (in shares)			(1,279)
Other	(44)			(44)			(44)
Other comprehensive income (loss)	(4,140)				(4,131)		(4,131)	(9)
Net income (loss)	11,626					11,534	11,534	15	77
Ending balance at Sep. 30, 2019	1,197,057	$ 94	$ 1,052	1,189,501	(20,395)	11,103	1,181,355	1,861	13,841
Ending balance (in shares) at Sep. 30, 2019		9,400,000	105,165,347
Beginning balance at Dec. 31, 2019	1,243,390	$ 94	$ 1,052	1,190,949	(16,034)	(2,283)	1,173,778	1,809	67,803
Beginning balance (in shares) at Dec. 31, 2019		9,400,000	105,169,515
Changes in equity
Contribution by non-controlling interests in joint venture	$ 577								577
Common stock redemption of common units				306	(23)		283	(283)
Common stock redemption of common units (in shares)	34,500		34,500
Dividends	$ (30,254)					(29,682)	(29,682)	(37)	(535)
Equity-based compensation	4,958		$ 6	4,943			4,949	9
Equity-based compensation (in shares)			557,338
Shares acquired for employee withholding requirements	$ (469)		$ (1)	(468)			(469)
Shares acquired for employee withholding requirements (in shares)	(65,345)		(65,345)
Other	$ (30)			(30)			(30)
Other comprehensive income (loss)	(17,233)				(17,203)		(17,203)	(30)
Net income (loss)	(104,537)					(100,285)	(100,285)	(203)	(4,049)
Ending balance at Sep. 30, 2020	1,096,402	$ 94	$ 1,057	1,195,700	(33,260)	(132,250)	1,031,341	1,265	63,796
Ending balance (in shares) at Sep. 30, 2020		9,400,000	105,696,008
Beginning balance at Jun. 30, 2020	1,131,536	$ 94	$ 1,057	1,194,178	(36,086)	(93,994)	1,065,249	1,332	64,955
Beginning balance (in shares) at Jun. 30, 2020		9,400,000	105,696,833
Changes in equity
Common stock redemption of common units				8	(1)		7	(7)
Common stock redemption of common units (in shares)			921
Dividends	(3,710)					(3,710)	(3,710)
Equity-based compensation	1,517			1,514			1,514	3
Equity-based compensation (in shares)			(1,746)
Other comprehensive income (loss)	2,834				2,827		2,827	7
Net income (loss)	(35,775)					(34,546)	(34,546)	(70)	(1,159)
Ending balance at Sep. 30, 2020	$ 1,096,402	$ 94	$ 1,057	$ 1,195,700	$ (33,260)	$ (132,250)	$ 1,031,341	$ 1,265	$ 63,796
Ending balance (in shares) at Sep. 30, 2020		9,400,000	105,696,008