Summary of Significant Accounting Policies - Summary of Deferred Leasing Intangibles (Phantoms) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Total accumulated amortization of deferred leasing intangibles included in total assets	$ 27,336	$ 26,432
Total accumulated amortization of deferred leasing intangibles included in total liabilities	$ 10,193	$ 8,911