Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities [Line Items]
Acquired lease intangible liabilities, net	$ 166,146	$ 178,984
Acquired Lease Intangible Liabilities
Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities [Line Items]
2019	14,675
2020	13,347
2021	12,075
2022	11,005
2023	9,999
Thereafter	105,045
Acquired lease intangible liabilities, net	$ 166,146