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Business Combination Contingent Consideration Arrangements Option to Buy Adjacent Land Option Two Term

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Capitalized Acquisition Costs

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Number Of Acquired Assets In Portfolio

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Area of a real estate property.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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Number of shares of equity interests issued or issuable to acquire entity.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

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Real Estate Investments and Equity Method Investments - Operating Property Acquisitions (Details) ft² in Thousands, $ in Thousands												12 Months Ended
	Feb. 06, 2019 USD ($)	Oct. 12, 2018 USD ($)	Aug. 28, 2018 USD ($)	Jan. 29, 2018 USD ($) shares	Jan. 09, 2018 USD ($)	Jul. 25, 2017 USD ($)	Nov. 17, 2016 USD ($) ft²	Oct. 13, 2016 USD ($) ft² shares	Aug. 04, 2016 USD ($) ft² shares	Apr. 29, 2016 USD ($) ft² shares	Jan. 14, 2016 USD ($) ft² portfolio	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Real Estate [Line Items]
Acquisition, common units/shares issued (in shares) \| shares								2,000,000
Acquisition, contract price								$ 26,200
Cash consideration for acquisition												$ 57,544	$ 30,026	$ 195,645
Indian Lakes Crossing
Real Estate [Line Items]
Purchase price					$ 14,700
Capitalized acquisition costs					$ 200
Parkway Centre
Real Estate [Line Items]
Purchase price				$ 11,300
Capitalized acquisition costs				300
Acquisition, cash consideration				9,600
Equity interests issued and issuable				$ 1,700
Lexington Square
Real Estate [Line Items]
Purchase price			$ 26,800
Capitalized acquisition costs			400
Acquisition, cash consideration			24,200
Equity interests issued and issuable			$ 2,600
Length of additional consideration contingency			18 months
Indian Lakes Crossing, Parkway Centre, And Lexington Square
Real Estate [Line Items]
Number of operating properties acquired \| property												3
11- asset retail portfolio
Real Estate [Line Items]
Purchase price											$ 170,500
Number of acquired assets in portfolio \| portfolio											11
Area of property acquired \| ft²											1,100
Southgate Square
Real Estate [Line Items]
Purchase price		$ 5,300								$ 39,500
Area of property acquired \| ft²										220
Acquisition, common units/shares issued (in shares) \| shares										1,575,185
Period for option to buy adjacent land, option one										2 years
Period for option to buy adjacent land, option two										1 year
Southshore Shops
Real Estate [Line Items]
Purchase price									$ 9,300
Acquisition, cash consideration									$ 6,700
Area of property acquired \| ft²									40
Acquisition, common units/shares issued (in shares) \| shares									189,160
Columbus Village II
Real Estate [Line Items]
Area of property acquired \| ft²								92
Acquisition, common units/shares issued (in shares) \| shares								2,000,000
Acquisition, contract price								$ 26,200
Renaissance Place
Real Estate [Line Items]
Area of property acquired \| ft²							80
Renaissance Square
Real Estate [Line Items]
Cash consideration for acquisition							$ 17,100
Wendover Village Ourparcel Phase \| Greensboro, North Carolina
Real Estate [Line Items]
Payments for purchase of land						$ 14,300
Capitalized acquisition costs						$ 100
Class A units \| Parkway Centre
Real Estate [Line Items]
Acquisition, common units/shares issued (in shares) \| shares				117,228
Class A units \| Southgate Square
Real Estate [Line Items]
Acquisition, assumption of debt										$ 21,100
Subsequent Event \| Wendover Village
Real Estate [Line Items]
Purchase price	$ 2,700