Commitments and Contingencies - Summary of Commitments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Commitments and Contingencies
Investment Commitment	$ 215,619
Amount Funded	33,908
Commitments funded	(98,872)
Remaining commitment	116,747
Real estate properties
Commitments and Contingencies
Investment Commitment	99,152
Amount Funded	27,400
Commitments funded	(60,523)
Remaining commitment	38,629
Accrued incentives and earn-out liabilities
Commitments and Contingencies
Investment Commitment	18,600
Amount Funded	1,434
Commitments funded	(2,239)
Remaining commitment	16,361
Lease incentives
Commitments and Contingencies
Investment Commitment	6,202
Amount Funded	593
Commitments funded	(1,048)
Remaining commitment	5,154
Mortgage loans
Commitments and Contingencies
Investment Commitment	63,490
Amount Funded	3,879
Commitments funded	(14,142)
Remaining commitment	49,348
Joint venture investments
Commitments and Contingencies
Investment Commitment	25,650
Amount Funded	480
Commitments funded	(20,623)
Remaining commitment	5,027
Notes receivable
Commitments and Contingencies
Investment Commitment	2,525
Amount Funded	122
Commitments funded	(297)
Remaining commitment	$ 2,228