Significant Accounting Policies - Schedule of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 88,594	$ 79,270
Below-market leases, gross	(44,099)	(34,485)
Finite-lived intangible assets (liabilities), gross	44,495	44,785
Below-market lease, accumulated amortization	15,972	11,392
Finite-lived intangible assets (liabilities), accumulated amortization	(47,385)	(43,457)
Below-market leases, net	(28,127)	(23,093)
Total	(2,890)	1,328
In-place leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	84,425	75,101
Finite-lived intangible assets, accumulated amortization	(59,504)	(51,239)
Finite-lived intangible assets, net	24,921	23,862
Above-market leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	4,169	4,169
Finite-lived intangible assets, accumulated amortization	(3,853)	(3,610)
Finite-lived intangible assets, net	$ 316	$ 559