Real Estate Investments, Net - Schedule of Property Acquisitions (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) property	Jun. 30, 2019 USD ($) property
Real estate investments, at cost:
Land	$ 25,454	$ 10,978
Buildings, fixtures and improvements	107,342	165,261
Total tangible assets	132,796	176,239
Acquired intangible lease assets:
Cash paid for acquired real estate investments	$ 144,689	$ 210,991
Number of properties purchased (property) | property	18	11
In-place leases
Acquired intangible lease assets:
Acquired intangible lease assets	$ 12,711	$ 35,698
Above market lease assets
Acquired intangible lease assets:
Acquired intangible lease assets	53	352
Below market lease liabilities
Acquired intangible lease assets:
Below-market lease liabilities	$ (871)	$ (1,298)