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Organization, Formation And Basis of Presentation - Additional Information (Detail) | Dec. 31, 2014 partnership
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Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Distribution of REIT taxable income (excluding net capital gains) to its stockholders | 90.00%bfs_MinimumPercentageOfTaxableIncomeDistributionToShareholders
Number of partnerships | 2 bfs_NumberofPartnerships
Shopping Centers |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Number of real estate properties | 50 us-gaap_NumberOfRealEstateProperties / us-gaap_RealEstatePropertiesAxis = bfs_ShoppingCentersMember
Mixed-Use Properties |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Number of real estate properties | 6 us-gaap_NumberOfRealEstateProperties / us-gaap_RealEstatePropertiesAxis = bfs_MixedUsePropertiesMember
Non-operating Development Properties |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Number of real estate properties | 3 us-gaap_NumberOfRealEstateProperties / us-gaap_RealEstatePropertiesAxis = bfs_NonoperatingDevelopmentPropertiesMember

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- Definition Minimum Percentage of Taxable Income Distribution to Shareholders + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
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- Definition Number of Partnerships + References No definition available. + Details
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- Details
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |