Subsequent Events (Details) $ in Thousands		1 Months Ended	9 Months Ended
	Sep. 30, 2016 ft² property	Nov. 08, 2016 USD ($) ft² property	Sep. 30, 2016 USD ($) ft² property	Sep. 30, 2015 USD ($)	Oct. 31, 2016 EUR (€)	Oct. 31, 2016 USD ($)	Oct. 31, 2016 GBP (£)
Subsequent Event [Line Items]
Number of properties sold (property)	3
Square Feet | ft²	18,600,000		18,600,000
Contract Sales Price | $			$ 13,414	$ 0
Number of real estate properties held for sale (property)			24
Number of properties under purchase and sales contract (property)			3
Number of properties not yet classified as held for sale (property)	3		3
Subsequent Event
Subsequent Event [Line Items]
Number of properties sold (property)		27
Square Feet | ft²		246,743
Contract Sales Price | $		$ 44,487
Subsequent Event | Designated as Hedging Instrument | Foreign Exchange Option
Subsequent Event [Line Items]
Notional amount					€ 6,300,000.0		£ 3,400,000.0
Premium paid for options | $						$ 500
Subsequent Event | Dollar General - Choctaw
Subsequent Event [Line Items]
Number of properties sold (property)		1
Square Feet | ft²		9,100
Contract Sales Price | $		$ 1,497
Subsequent Event | Family Dollar - 8-Pack
Subsequent Event [Line Items]
Number of properties sold (property)		8
Square Feet | ft²		63,510
Contract Sales Price | $		$ 13,239
Subsequent Event | Dollar General - Allentown
Subsequent Event [Line Items]
Number of properties sold (property)		1
Square Feet | ft²		9,026
Contract Sales Price | $		$ 1,699
Subsequent Event | Dollar General - Union Township
Subsequent Event [Line Items]
Number of properties sold (property)		1
Square Feet | ft²		9,014
Contract Sales Price | $		$ 1,635
Subsequent Event | Dollar General - 15-Pack
Subsequent Event [Line Items]
Number of properties sold (property)		15
Square Feet | ft²		145,938
Contract Sales Price | $		$ 21,661
Subsequent Event | Fresenius I
Subsequent Event [Line Items]
Number of properties sold (property)		1
Square Feet | ft²		10,155
Contract Sales Price | $		$ 4,756