Acquisitions - Allocation of Fair Value (Details) - Inland Center $ in Thousands	Feb. 17, 2015 USD ($)
Acquisition
Property	$ 91,871
Deferred charges	9,752
Other assets	5,782
Total assets acquired	107,405
Mortgage notes payable	50,000
Other accrued liabilities	4,905
Total liabilities assumed	54,905
Fair value of acquired net assets (at 100% ownership)	$ 52,500
Ownership percentage at completion of acquisition (as a percent)	100.00%