Basis of Presentation - Nature of Operations (Details) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2019 shares	Jun. 30, 2019 USD ($) Property State parcel subsidiary Segment $ / shares shares
Real Estate Properties [Line Items]
Number of real estate properties		27
Number of states in which entity operates \| State		9
Number of properties under development		1
Number of properties held for sale \| parcel		1
OP Units redeemed (in units) \| shares	6,250,000
Common stock, conversion ratio		1
Period of conversion		1 year
Redeemable noncontrolling interest, equity, other, fair value \| $		$ 13.1
Share price (in dollars per share) \| $ / shares		$ 6.50
Limited partners' capital account, units outstanding (in shares) \| shares		2,022,635
Number of subsidiaries \| subsidiary		2
Number of reportable segments \| Segment		1
Percentage of consolidated revenue having no single tenant		10.00%
PREIT Associates, L.P. - Operating Partnership
Real Estate Properties [Line Items]
Interest in the Operating Partnership		97.50%
Mall
Real Estate Properties [Line Items]
Number of real estate properties		21
Strip And Power Center
Real Estate Properties [Line Items]
Number of real estate properties		4
Development Properties
Real Estate Properties [Line Items]
Number of real estate properties		2
Retail Site
Real Estate Properties [Line Items]
Number of real estate properties		1

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Common Stock, Conversion Ratio, Period Of Conversion

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The number of limited partner units outstanding.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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Fair value of noncontrolling interests which are redeemable by the parent entity and classified as other equity.

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Price of a single share of a number of saleable stocks of a company.

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