Organization, Formation and Structure (Details)	9 Months Ended
Sep. 30, 2021 property store
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of shopping centers \| store	33
Saul Holdings Limited Partnership
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of ownership in operating partnership	73.40%
Giant Food
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of shopping centers \| store	11
Giant Food \| Revenue \| Customer Concentration Risk
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of total revenue	5.30%
No Individual Tenant \| Revenue \| Customer Concentration Risk
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of total revenue	2.50%
Shopping Centers
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	50
Mixed-Use Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	7
Non-operating Development Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	4

Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
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- Definition

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

+ References

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Represents the number of stores.

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