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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Net property	$ 841,743		$ 835,983
Other assets	351,364		159,499
Other liabilities	289,952		85,681
Debt, net	581,024		365,707
Equity	322,131		544,094
Right of use asset - operating leases, net	21,828	$ 22,400	0
Lease liability - operating leases	$ 22,503	22,400	$ 0
MAP Venture
Schedule of Equity Method Investments [Line Items]
Right of use asset - operating leases, net		197,100
Lease liability - operating leases		$ 206,400

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Present value of lessee's discounted obligation for lease payments from operating lease.

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