Real Estate Investments, Net - Schedule of Property Acquisitions (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($) property
Real estate investments, at cost:
Land	$ 28,622	$ 22,441
Buildings, fixtures and improvements	121,311	243,545
Total tangible assets	149,933	265,986
Acquired intangible lease assets:
Total intangible assets	15,855	43,017
ROU asset	5,022	0
Cash paid for acquired real estate investments	$ 170,810	$ 309,003
Number of properties purchased (property) | property	21	20
In-place leases
Acquired intangible lease assets:
Acquired intangible lease assets	$ 16,842	$ 44,256
Above market lease assets
Acquired intangible lease assets:
Acquired intangible lease assets	53	406
Below market lease liabilities
Acquired intangible lease assets:
Below-market lease liabilities	$ (1,040)	$ (1,645)