Summary of Significant Accounting Policies - Summary of Deferred Leasing Intangibles (Phantoms) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Total accumulated amortization of deferred leasing intangibles included in total assets	$ 24,781	$ 29,541
Total accumulated amortization of deferred leasing intangibles included in total liabilities	$ 13,849	$ 13,045