CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Cumulative Distributions and Net Income	Accumulated Other Comprehensive Income	Total Stockholders’ Equity	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2016		56,775,767
Balance at Dec. 31, 2016	$ 295,550	$ 568	$ 455,373	$ (162,289)	$ 0	$ 293,652	$ 1,898
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	210,580			210,644		210,644	(64)
Other comprehensive income	25,146				25,146	25,146
Issuance of common stock (in shares)		585,192
Issuance of common stock	8,666	$ 6	8,660			8,666
Transfers to redeemable common stock	(498)		(498)			(498)
Redemptions of common stock (in shares)		(5,307,142)
Redemptions of common stock	(74,780)	$ (53)	(74,727)			(74,780)
Distributions declared	(203,809)			(203,809)		(203,809)
Other offering costs	(8)		(8)			(8)
Noncontrolling interest contribution	158					0	158
Distributions to noncontrolling interests	(22)					0	(22)
Balance (in shares) at Dec. 31, 2017		52,053,817
Balance at Dec. 31, 2017	260,983	$ 521	388,800	(155,454)	25,146	259,013	1,970
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect adjustments to retained earnings	2,472			27,618	(25,146)	2,472
Net income (loss)	33,324			33,546		33,546	(222)
Other comprehensive income	0
Issuance of common stock (in shares)		123,264
Issuance of common stock	1,418	$ 1	1,417			1,418
Stock distribution issued (in shares)		25,976,746
Stock distribution issued	278,210	$ 259	277,951			278,210
Transfers from redeemable common stock	3,113		3,113			3,113
Redemptions of common stock (in shares)		(11,330,966)
Redemptions of common stock	(123,613)	$ (113)	(123,500)			(123,613)
Distributions declared	(162,694)			(162,694)		(162,694)
Other offering costs	(11)		(11)			(11)
Noncontrolling interest contribution	$ 762					0	762
Balance (in shares) at Dec. 31, 2018	66,822,861	66,822,861
Balance at Dec. 31, 2018	$ 293,964	$ 668	547,770	(256,984)	0	291,454	2,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15,181)			(17,282)		(17,282)	2,101
Other comprehensive income	0
Issuance of common stock (in shares)		84,248
Issuance of common stock	835	$ 1	834			835
Transfers from redeemable common stock	9,171		9,171			9,171
Redemptions of common stock (in shares)		(1,040,344)
Redemptions of common stock	(10,028)	$ (10)	(10,018)			(10,028)
Distributions declared	(1,721)			(1,721)		(1,721)
Other offering costs	(27)		(27)			(27)
Restricted Stock	5,440		5,440			5,440
Adjustments to redemption value of mezzanine equity restricted stock	(1,209)			(1,209)		(1,209)
Noncontrolling interest contribution	13					0	13
Distributions to noncontrolling interests	$ (3,869)					0	(3,869)
Balance (in shares) at Dec. 31, 2019	65,866,765	65,866,765
Balance at Dec. 31, 2019	$ 277,388	$ 659	$ 553,170	$ (277,196)	$ 0	$ 276,633	$ 755