Subsequent Events - Additional Information (Details) ft² in Thousands, $ in Thousands	1 Months Ended	3 Months Ended
	Apr. 27, 2017 USD ($) Property	Mar. 31, 2017 USD ($) ft²	Mar. 31, 2016 USD ($)	Apr. 20, 2017 USD ($)	Apr. 03, 2017 ft²
Subsequent Event [Line Items]
Purchase price of industrial properties acquired		$ 15,074	$ 47,406
Gross leasable area (GLA) of industrial properties destroyed by fires | ft²		62,700
Subsequent Events
Subsequent Event [Line Items]
Number of industrial properties acquired | Property	1
Purchase price of industrial properties acquired	$ 11,150
Private Placement Notes 2027 | Subsequent Events
Subsequent Event [Line Items]
Private Placement Notes, Face Amount				$ 125,000
Private Placement Notes, Interest Rate				4.30%
Private Placement Notes 2029 | Subsequent Events
Subsequent Event [Line Items]
Private Placement Notes, Face Amount				$ 75,000
Private Placement Notes, Interest Rate				4.40%
2017 Fire | Subsequent Events
Subsequent Event [Line Items]
Gross leasable area (GLA) of industrial properties destroyed by fires | ft²					80