Total Mortgage Debt On Tenancy In common

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The ownership interest in jointly owned investments by the reporting entity.

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Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest.

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Equity Investments in Real Estate - Narratives (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Oct. 03, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Schedule of Equity Method Investments
Proceeds from equity method investment				$ 12,670	$ 26,278
Unamortized basis differences on our equity investments		$ 25,000		25,000		$ 26,300
Unconsolidated Equity Investments
Schedule of Equity Method Investments
Proceeds from equity method investment		14,800	$ 12,400	26,600	$ 33,700
Shelborne
Schedule of Equity Method Investments
Proceeds from noncontrolling interest	$ 4,000
Shelborne \| Third Party
Schedule of Equity Method Investments
Ownership interest (as a percentage)	4.50%
Jumbo Logistiek Vastgooed B.V \| Net Lease
Schedule of Equity Method Investments
Mortgage debt on tenancy in common		62,300		62,300
Jumbo Logistiek Vastgooed B.V \| Net Lease \| WPC
Schedule of Equity Method Investments
Mortgage debt on tenancy in common		$ 73,300		$ 73,300