Basis of Presentation - Nature of Operations (Details) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($) Property State subsidiary Segment $ / shares shares
Real Estate Properties [Line Items]
Number of real estate properties	26
Number of states in which entity operates \| State	9
Common stock, conversion ratio	1
Period of conversion	1 year
Redeemable noncontrolling interest, equity, other, fair value \| $	$ 3.8
Share price (in dollars per share) \| $ / shares	$ 1.92
Limited partners' capital account, units outstanding (in shares) \| shares	1,975,928
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	97.60%
Mall
Real Estate Properties [Line Items]
Number of real estate properties	20
Other Retail Properties
Real Estate Properties [Line Items]
Number of real estate properties	5
Development Properties
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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Number Of Subsidiaries

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- Definition

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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The number of real estate properties owned as of the balance sheet date.

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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 states the entity operates in as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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