Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated other comprehensive income (loss)	Distributions in excess of accumulated earnings	Total
Balance at Dec. 31, 2017	$ 11	$ 1,356,457	$ 12,166	$ (497,342)	$ 871,292
Balance (in shares) at Dec. 31, 2017	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			6,575	1,425	8,000
Distributions $0.19 and $0.09 per share of common stock				(20,374)	(20,374)
Balance at Mar. 31, 2018	$ 11	1,356,457	18,741	(516,291)	858,918
Balance (in shares) at Mar. 31, 2018	107,231
Balance at Dec. 31, 2017	$ 11	1,356,457	12,166	(497,342)	871,292
Balance (in shares) at Dec. 31, 2017	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income					21,797
Balance at Sep. 30, 2018	$ 11	1,356,457	22,265	(525,320)	853,413
Balance (in shares) at Sep. 30, 2018	107,231
Balance at Mar. 31, 2018	$ 11	1,356,457	18,741	(516,291)	858,918
Balance (in shares) at Mar. 31, 2018	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			2,455	665	3,120
Distributions $0.19 and $0.09 per share of common stock				(9,651)	(9,651)
Balance at Jun. 30, 2018	$ 11	1,356,457	21,196	(525,277)	852,387
Balance (in shares) at Jun. 30, 2018	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			1,069	9,608	10,677
Distributions $0.19 and $0.09 per share of common stock				(9,651)	(9,651)
Balance at Sep. 30, 2018	$ 11	1,356,457	22,265	(525,320)	853,413
Balance (in shares) at Sep. 30, 2018	107,231
Balance at Dec. 31, 2018	$ 11	1,356,457	14,765	(533,599)	837,634
Balance (in shares) at Dec. 31, 2018	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			(6,791)	(1,205)	(7,996)
Distributions $0.19 and $0.09 per share of common stock				(9,651)	(9,651)
Balance at Mar. 31, 2019	$ 11	1,356,457	7,974	(544,455)	819,987
Balance (in shares) at Mar. 31, 2019	107,231
Balance at Dec. 31, 2018	$ 11	1,356,457	14,765	(533,599)	837,634
Balance (in shares) at Dec. 31, 2018	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income					(19,028)
Balance at Sep. 30, 2019	$ 11	1,356,457	(7,090)	(559,725)	789,653
Balance (in shares) at Sep. 30, 2019	107,231
Balance at Mar. 31, 2019	$ 11	1,356,457	7,974	(544,455)	819,987
Balance (in shares) at Mar. 31, 2019	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			(11,461)	1,633	(9,828)
Distributions $0.19 and $0.09 per share of common stock				(9,651)	(9,651)
Balance at Jun. 30, 2019	$ 11	1,356,457	(3,487)	(552,473)	800,508
Balance (in shares) at Jun. 30, 2019	107,231
Increase (Decrease) in Stockholders' Equity
Comprehensive income			(3,603)	2,399	(1,204)
Distributions $0.19 and $0.09 per share of common stock				(9,651)	(9,651)
Balance at Sep. 30, 2019	$ 11	$ 1,356,457	$ (7,090)	$ (559,725)	$ 789,653
Balance (in shares) at Sep. 30, 2019	107,231

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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