Investments in Real Estate - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) a ft² property	Mar. 31, 2019 USD ($) a ft² building property
Finite-Lived Intangible Assets [Line Items]
Number of properties acquired | property	1
Area of real estate property acquired | ft²	2.7
Revenues	$ 45,116	$ 40,880
Net income	12,856	15,532
Capitalized interest associated with redevelopment activities	$ 700	800
Improved land parcels
Finite-Lived Intangible Assets [Line Items]
Number of properties | property	21
Area of real estate property | a	82.2
Redevelopment property
Finite-Lived Intangible Assets [Line Items]
Number of properties | property	4
Area of real estate property | ft²	500,000
Asset acquisition, consideration transferred	$ 111,900
Asset acquisition, real estate development costs	102,500
Asset Acquisitions 2020
Finite-Lived Intangible Assets [Line Items]
Purchase price	30,600
Finite-lived intangible assets acquired	1,100
Asset acquisition, intangible liabilities	500
Revenues	100
Net income	$ 100
Asset Acquisitions 2020 | Improved land parcels
Finite-Lived Intangible Assets [Line Items]
Number of properties acquired | property	1
Area of real estate property acquired | ft²	66,000
Asset Acquisitions 2020 | Land
Finite-Lived Intangible Assets [Line Items]
Asset acquisition, property additions	$ 21,900
Asset Acquisitions 2020 | Building and Building Improvements
Finite-Lived Intangible Assets [Line Items]
Asset acquisition, property additions	$ 7,600
Asset Acquisitions 2019
Finite-Lived Intangible Assets [Line Items]
Purchase price		68,200
Finite-lived intangible assets acquired		3,900
Asset acquisition, intangible liabilities		3,300
Revenues		200
Net income		$ 100
Asset Acquisitions 2019 | Industrial building
Finite-Lived Intangible Assets [Line Items]
Number of properties acquired | building		2
Area of real estate property acquired | ft²		46,000
Asset Acquisitions 2019 | Improved land parcels
Finite-Lived Intangible Assets [Line Items]
Number of properties acquired | property		2
Area of real estate property acquired | a		19.7
Asset Acquisitions 2019 | Land
Finite-Lived Intangible Assets [Line Items]
Asset acquisition, property additions		$ 59,600
Asset Acquisitions 2019 | Building and Building Improvements
Finite-Lived Intangible Assets [Line Items]
Asset acquisition, property additions		$ 4,700