CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance at Dec. 31, 2016	$ 1,205,970	$ 1,574	$ 1,402,611	$ (212,807)	$ 14,091	$ 501
Beginning balance, shares at Dec. 31, 2016		157,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(18,232)			(18,317)		85
Change from cash flow hedging derivatives	2,781				2,781
Issuance of common stock	194,109	$ 190	193,919
Issuance of common stock, shares		19,014
Share-based compensation	1,267		1,267
Upfront offering costs	(11,932)		(11,932)
Trailing distribution fees	880		(5,790)	6,670
Redemptions of common stock	$ (18,845)	$ (19)	(18,326)			(500)
Redemptions of common stock, shares	(1,906)	(1,906)
Distributions on common stock	$ (96,528)			(96,443)		(85)
Ending balance at Dec. 31, 2017	1,259,470	$ 1,745	1,561,749	(320,897)	16,872	1
Ending balance, shares at Dec. 31, 2017		174,514
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(6,837)			(6,837)
Change from cash flow hedging derivatives	(434)				(434)
Issuance of common stock	48,184	$ 45	48,139
Issuance of common stock, shares		4,499
Share-based compensation	1,513		1,513
Upfront offering costs	(568)		(568)
Trailing distribution fees	7,579		90	7,489
Redemptions of common stock	$ (28,097)	$ (20)	(28,077)
Redemptions of common stock, shares	(2,862)	(2,059)
Distributions on common stock	$ (100,452)			(100,452)
Ending balance at Dec. 31, 2018	1,180,358	$ 1,770	1,582,846	(420,697)	16,438	1
Ending balance, shares at Dec. 31, 2018		176,954
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	12,065			12,065
Change from cash flow hedging derivatives	(13,924)				(13,924)
Issuance of common stock	35,163	$ 30	35,133
Issuance of common stock, shares		3,004
Share-based compensation	1,813		1,813
Upfront offering costs	(557)		(557)
Trailing distribution fees	8,305		79	8,226
Redemptions of common stock	$ (11,440)	$ (20)	(11,420)
Redemptions of common stock, shares	(1,155)	(1,958)
Distributions on common stock	$ (101,191)			(101,191)
Ending balance at Dec. 31, 2019	$ 1,110,592	$ 1,780	$ 1,607,894	$ (501,597)	$ 2,514	$ 1
Ending balance, shares at Dec. 31, 2019		178,000