Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Class A	Class C	Total CPA 18 - Global Stockholders	Total CPA 18 - Global Stockholders Cumulative Effect, Period of Adoption, Adjustment	Common Stock Class A	Common Stock Class C	Additional Paid-In Capital	Distributions and Accumulated Losses	Distributions and Accumulated Losses Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning equity balance, value at Dec. 31, 2018	$ 895,970	$ (1,108)			$ 828,977	$ (1,108)	$ 114	$ 32	$ 1,290,888	$ (411,464)	$ (1,108)	$ (50,593)	$ 66,993
Beginning equity balance, shares at Dec. 31, 2018							114,589,333	31,641,265
Statements of Equity
Shares issued	43,814				43,814		$ 4	$ 1	43,809
Shares issued, shares							3,822,104	1,171,368
Shares issued to affiliate	6,262				6,262		$ 1		6,261
Shares issued to affiliate, shares							714,598
Shares issued to directors	80				80				80
Shares issued to directors, shares							9,164
Contributions from noncontrolling interests	2,838												2,838
Distributions to noncontrolling interests	(21,818)												(21,818)
Distributions declared	(90,326)				(90,326)					(90,326)
Net income (loss)	44,004				32,572					32,572			11,432
Other comprehensive income (loss)
Foreign currency translation adjustments	(4,509)				(3,865)							(3,865)	(644)
Unrealized gain (loss) on derivative instruments	(2,079)				(2,077)							(2,077)	(2)
Repurchase of shares	(21,457)				(21,457)		$ (2)	$ (1)	(21,454)
Repurchase of shares, shares							(1,955,621)	(574,120)
Ending equity balance, value at Dec. 31, 2019	$ 851,671	$ (6,903)			792,872	$ (6,903)	$ 117	$ 32	1,319,584	(470,326)	$ (6,903)	(56,535)	58,799
Ending equity balance, shares at Dec. 31, 2019							117,179,578	32,238,513
Other comprehensive income (loss)
Accounting Standards Update	Accounting Standards Update 2016-13 [Member]
Shares issued	$ 30,173				30,173		$ 3	$ 1	30,169
Shares issued, shares							2,702,908	775,285
Shares issued to affiliate	9,812				9,812		$ 1		9,811
Shares issued to affiliate, shares							1,152,029
Shares issued to directors	80				80				80
Shares issued to directors, shares							9,650
Contributions from noncontrolling interests	4,609												4,609
Distributions to noncontrolling interests	(20,802)												(20,802)
Acquisition of noncontrolling interest in real estate	(4,343)				(4,042)				(4,042)				(301)
Distributions declared	(49,973)				(49,973)					(49,973)
Net income (loss)	22,301				12,343					12,343			9,958
Foreign currency translation adjustments	43,772				40,106							40,106	3,666
Unrealized gain (loss) on derivative instruments	(3,519)				(3,501)							(3,501)	(18)
Repurchase of shares	(24,327)				(24,327)		$ (2)	$ (1)	(24,324)
Repurchase of shares, shares							(1,984,977)	(917,002)
Ending equity balance, value at Dec. 31, 2020	852,551				796,640		$ 119	$ 32	1,331,278	(514,859)		(19,930)	55,911
Ending equity balance, shares at Dec. 31, 2020			119,059,188	32,096,796			119,059,188	32,096,796
Statements of Equity
Shares issued	17,469				17,469		$ 2	$ 1	17,466
Shares issued, shares							1,474,248	511,195
Shares issued to affiliate	12,547				12,547		$ 1		12,546
Shares issued to affiliate, shares							1,420,820
Shares issued to directors	80				80				80
Shares issued to directors, shares							8,979
Contributions from noncontrolling interests	3,838												3,838
Distributions to noncontrolling interests	(19,665)												(19,665)
Distributions declared	(68,243)				(68,243)					(68,243)
Net income (loss)	27,610				27,846					27,846			(236)
Other comprehensive income (loss)
Foreign currency translation adjustments	(36,960)				(34,365)							(34,365)	(2,595)
Unrealized gain (loss) on derivative instruments	2,513				2,501							2,501	12
Repurchase of shares	(46,115)				(46,115)		$ (3)	$ (2)	(46,110)
Repurchase of shares, shares							(3,278,469)	(2,007,452)
Ending equity balance, value at Dec. 31, 2021	$ 745,625				$ 708,360		$ 119	$ 31	$ 1,315,260	$ (555,256)		$ (51,794)	$ 37,265
Ending equity balance, shares at Dec. 31, 2021			118,684,766	30,600,539			118,684,766	30,600,539