Agreements and Transactions with Related Parties - Related Party Income, by Program (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction
Revenue from related parties	$ 231,938	$ 242,888	$ 295,492
CPA: 16 - Global
Related Party Transaction
Revenue from related parties	0	0	7,999
CPA: 17 - Global
Related Party Transaction
Revenue from related parties	74,852	81,740	68,710
CPA:18 - Global
Related Party Transaction
Revenue from related parties	31,330	85,431	129,642
CWI
Related Party Transaction
Revenue from related parties	34,085	44,712	89,141
CWI 2
Related Party Transaction
Revenue from related parties	67,524	30,340	0
CCIF
Related Party Transaction
Revenue from related parties	11,164	665	0
CESH I
Related Party Transaction
Revenue from related parties	$ 12,983	$ 0	$ 0