Variable Interest Entities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Accounts payable and accrued expenses	$ (23,457)	$ (27,836)
Carrying Value | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Loans receivable	210,548	232,344
Financing receivables from affiliates	69,428	67,153
Equity method investment	7,773	1,761
Accounts payable and accrued expenses	(2,560)	(2,515)
Total	285,189	298,743
Maximum Exposure to Loss | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Loans receivable	315,750	335,255
Financing receivables from affiliates	69,428	67,153
Equity method investment	16,524	19,661
Accounts payable and accrued expenses	0	0
Total	$ 401,702	$ 422,069