Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest income, Assets of consolidated VIEs	$ 160,885	$ 146,900	$ 292,865	$ 297,518
Interest expense, Non-recourse liabilities of VIEs	$ 58,772	$ 50,426	$ 98,022	$ 97,179