Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A	Class C	Total CPA 18 - Global Stockholders	Common Stock Class A	Common Stock Class C	Additional Paid-In Capital	Distributions and Accumulated Losses	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning equity balance, value at Dec. 31, 2016	$ 865,904			$ 799,899	$ 107	$ 30	$ 1,222,139	$ (360,673)	$ (61,704)	$ 66,005
Beginning equity balance, shares at Dec. 31, 2016					107,460,081	30,469,144
Statements of Equity
Shares issued, value	11,136			11,136	$ 1	$ 0	11,135
Shares issued, shares					1,063,682	343,249
Shares issued to affiliate, value	2,670			2,670	$ 0		2,670
Shares issued to affiliate, shares					338,062
Contributions from noncontrolling interests	840									840
Distributions to noncontrolling interests	(4,484)									(4,484)
Distributions declared	(21,214)			(21,214)				(21,214)
Net Income	2,545			620				620		1,925
Other comprehensive income:
Foreign currency translation adjustments	4,155			3,626					3,626	529
Realized and unrealized loss on derivative instruments	(457)			(457)					(457)
Repurchase of shares, value	(2,704)			(2,704)	$ 0		(2,704)
Repurchase of shares, shares					(288,273)	(55,821)
Ending equity balance, value at Mar. 31, 2017	858,391			793,576	$ 108	$ 30	1,233,240	(381,267)	(58,535)	64,815
Ending equity balance, shares at Mar. 31, 2017					108,573,552	30,756,572
Beginning equity balance, value at Dec. 31, 2017	872,065			804,764	$ 110	$ 31	1,257,840	(420,005)	(33,212)	67,301
Beginning equity balance, shares at Dec. 31, 2017		111,193,651	31,189,137		111,193,651	31,189,137
Statements of Equity
Shares issued, value	11,012			11,012	$ 1	$ 0	11,011
Shares issued, shares					1,003,893	313,417
Shares issued to affiliate, value	2,886			2,886	$ 0		2,886
Shares issued to affiliate, shares					345,221
Contributions from noncontrolling interests	171									171
Distributions to noncontrolling interests	(3,596)									(3,596)
Distributions declared	(21,834)			(21,834)				(21,834)
Net Income	12,318			10,327				10,327		1,991
Other comprehensive income:
Foreign currency translation adjustments	11,577			9,960					9,960	1,617
Realized and unrealized loss on derivative instruments	(659)			(659)					(659)
Repurchase of shares, value	(4,738)			(4,738)	$ 0		(4,738)
Repurchase of shares, shares					(443,204)	(133,781)
Ending equity balance, value at Mar. 31, 2018	$ 879,202			$ 811,718	$ 111	$ 31	$ 1,266,999	$ (431,512)	$ (23,911)	$ 67,484
Ending equity balance, shares at Mar. 31, 2018		112,099,561	31,368,773		112,099,561	31,368,773