Loss Per Share and Equity (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Basic and Diluted
Net Loss Attributable to CPA®:18 – Global	$ (2,197)	$ (12,213)
Class A common stock
Basic and Diluted
Weighted-Average Shares Outstanding	103,972,011	100,642,226
Net Loss Attributable to CPA®:18 – Global	$ (1,606)	$ (9,582)
Loss Per Share (in dollars per share)	$ (0.02)	$ (0.10)
Class C common stock
Basic and Diluted
Weighted-Average Shares Outstanding	29,757,726	22,381,181
Net Loss Attributable to CPA®:18 – Global	$ (591)	$ (2,631)
Loss Per Share (in dollars per share)	$ (0.02)	$ (0.12)