Commitments and Contingencies - Summary of Commitments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Commitments and Contingencies
Investment Commitment	$ 174,431
2019 Funding	17,390
Total Commitments funded	105,436
Remaining commitment	68,995
Real estate properties
Commitments and Contingencies
Investment Commitment	81,331
2019 Funding	14,034
Total Commitments funded	59,781
Remaining commitment	21,550
Accrued incentives and earn-out liabilities
Commitments and Contingencies
Investment Commitment	9,000
Remaining commitment	9,000
Mortgage loans
Commitments and Contingencies
Investment Commitment	56,200
2019 Funding	2,236
Total Commitments funded	20,827
Remaining commitment	35,373
Commitments To Expand and Renovate Properties
Commitments and Contingencies
Investment Commitment	35,700
Contingent Funding Commitments
Commitments and Contingencies
Investment Commitment	20,500
Joint venture investments
Commitments and Contingencies
Investment Commitment	25,650
2019 Funding	293
Total Commitments funded	23,976
Remaining commitment	1,674
Notes receivable
Commitments and Contingencies
Investment Commitment	2,250
2019 Funding	827
Total Commitments funded	852
Remaining commitment	$ 1,398