Subsequent Events - Real Estate Investment Activity (Details) $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 30, 2020 USD ($) property	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 18, 2020
Subsequent Event [Line Items]
Estimated gain (loss) on sale of properties		$ (300)	$ (800)
Acquisitions, 2020 [Member]
Subsequent Event [Line Items]
Total purchase price of assets acquired		$ 147,121
Faison JV Bethlehem GA, LLC [Member]
Subsequent Event [Line Items]
Remaining ownership percentage				10.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Estimated gain (loss) on sale of properties	$ 100
Total purchase price of assets acquired	$ 32,800
Subsequent Event [Member] | Acquisitions, 2020 [Member]
Subsequent Event [Line Items]
Number of real estate properties acquired | property	7
Total purchase price of assets acquired	$ 20,300
Subsequent Event [Member] | Mezzanine, Distribution Facility [Member]
Subsequent Event [Line Items]
Total purchase price of assets acquired	$ 8,200
Subsequent Event [Member] | Faison JV Bethlehem GA, LLC [Member]
Subsequent Event [Line Items]
Remaining ownership percentage	10.00%
Payments to acquire interest in joint venture	$ 4,300
Subsequent Event [Member] | Property Disposition, 2020 [Member]
Subsequent Event [Line Items]
Number of real estate properties disposed | property	1
Aggregate gross sales price	$ 200