Real Estate Investments, Net (Acquired Assets) (Details) - Individual business acquisitions $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) property
Investments in real estate, net:
Land	$ 1,522
Buildings, fixtures and improvements	4,120
Total tangible assets	5,642
Market lease liabilities	(112)
Total intangible assets and liabilities	1,052
Cash paid for real estate investments, including acquisitions	$ 6,694
Number of properties purchased | property	1
In-place lease assets
Investments in real estate, net:
In-place leases, market leases, and other intangible assets	$ 1,152
Above-market lease assets
Investments in real estate, net:
In-place leases, market leases, and other intangible assets	$ 12