XML 84 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
Mortgage Notes Payable, Revolving Credit Facility, Interest Expense and Amortization of Deferred Debt Costs - Summary of Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Notes Payable [Line Items]    
Fixed rate mortgages $ 808,997us-gaap_SecuredDebt $ 820,068us-gaap_SecuredDebt
Interest rate 3.65%us-gaap_DebtInstrumentInterestRateEffectivePercentage 4.85%us-gaap_DebtInstrumentInterestRateEffectivePercentage
Scheduled maturity period 8 years 8 months 21 days [1]  
Total notes payable 857,388us-gaap_NotesAndLoansPayable 820,068us-gaap_NotesAndLoansPayable
Interest rate during period 5.36%us-gaap_DebtInstrumentInterestRateDuringPeriod [1]  
Fixed Rate Mortgage Notes Payable    
Notes Payable [Line Items]    
Fixed rate mortgages 784,757us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember		 789,872us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
Interest rate 5.70%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember		 [1]  
Scheduled maturity period 9 years 3 months 0 days [1]  
Fixed Rate Mortgage Notes Payable | 7.45% due June 2015    
Notes Payable [Line Items]    
Fixed rate mortgages 15,399us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJuneTwentyFifteenMember		 [2] 16,128us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJuneTwentyFifteenMember
Interest rate 7.45%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJuneTwentyFifteenMember		  
Scheduled maturity 2015-06 [1]  
Fixed Rate Mortgage Notes Payable | 6.01% due February 2018    
Notes Payable [Line Items]    
Fixed rate mortgages 32,049us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingFebruaryTwentyEighteenMember		 [3] 33,246us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingFebruaryTwentyEighteenMember
Interest rate 6.01%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingFebruaryTwentyEighteenMember		  
Scheduled maturity 2018-02 [1]  
Fixed Rate Mortgage Notes Payable | 5.88% due January 2019    
Notes Payable [Line Items]    
Fixed rate mortgages 35,398us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightEightMaturingJanuaryTwentyNineteenMember		 [4] 36,937us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightEightMaturingJanuaryTwentyNineteenMember
Interest rate 5.88%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightEightMaturingJanuaryTwentyNineteenMember		  
Scheduled maturity 2019-01 [1]  
Fixed Rate Mortgage Notes Payable | 5.76% due May 2019    
Notes Payable [Line Items]    
Fixed rate mortgages 11,454us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenSixMaturingMayTwentyNineteenMember		 [5] 11,949us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenSixMaturingMayTwentyNineteenMember
Interest rate 5.76%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenSixMaturingMayTwentyNineteenMember		  
Scheduled maturity 2019-05 [1]  
Fixed Rate Mortgage Notes Payable | 5.62% due July 2019    
Notes Payable [Line Items]    
Fixed rate mortgages 15,819us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJulyTwentyNineteenMember		 [6] 16,501us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJulyTwentyNineteenMember
Interest rate 5.62%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJulyTwentyNineteenMember		  
Scheduled maturity 2019-07 [1]  
Fixed Rate Mortgage Notes Payable | 5.79% due September 2019    
Notes Payable [Line Items]    
Fixed rate mortgages 15,761us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenNineMaturingSeptemberTwentyNineteenMember		 [7] 16,419us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenNineMaturingSeptemberTwentyNineteenMember
Interest rate 5.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSevenNineMaturingSeptemberTwentyNineteenMember		  
Scheduled maturity 2019-09 [1]  
Fixed Rate Mortgage Notes Payable | 5.22% due January 2020    
Notes Payable [Line Items]    
Fixed rate mortgages 14,014us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointTwoTwoMaturingJanuaryTwentyTwentyMember		 [8] 14,610us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointTwoTwoMaturingJanuaryTwentyTwentyMember
Interest rate 5.22%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointTwoTwoMaturingJanuaryTwentyTwentyMember		  
Scheduled maturity 2020-01 [1]  
Fixed Rate Mortgage Notes Payable | 5.60% due May 2020    
Notes Payable [Line Items]    
Fixed rate mortgages 10,881us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixZeroMaturingMayTwentyTwentyMember		 [9] 11,159us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixZeroMaturingMayTwentyTwentyMember
Interest rate 5.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixZeroMaturingMayTwentyTwentyMember		  
Scheduled maturity 2020-05 [1]  
Fixed Rate Mortgage Notes Payable | 5.30% due June 2020    
Notes Payable [Line Items]    
Fixed rate mortgages 9,535us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeZeroMaturingJuneTwentyTwentyMember		 [10] 9,921us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeZeroMaturingJuneTwentyTwentyMember
Interest rate 5.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeZeroMaturingJuneTwentyTwentyMember		  
Scheduled maturity 2020-06 [1]  
Fixed Rate Mortgage Notes Payable | 5.83% due July 2020    
Notes Payable [Line Items]    
Fixed rate mortgages 41,441us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightThreeMaturingJulyTwentyTwentyMember		 [11] 42,462us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightThreeMaturingJulyTwentyTwentyMember
Interest rate 5.83%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightThreeMaturingJulyTwentyTwentyMember		  
Scheduled maturity 2020-07 [1]  
Fixed Rate Mortgage Notes Payable | 5.81% due February 2021    
Notes Payable [Line Items]    
Fixed rate mortgages 8,346us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightOneMaturingFebruaryTwentyTwentyOneMember		 [12] 8,649us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightOneMaturingFebruaryTwentyTwentyOneMember
Interest rate 5.81%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightOneMaturingFebruaryTwentyTwentyOneMember		  
Scheduled maturity 2021-02 [1]  
Fixed Rate Mortgage Notes Payable | 6.01% due August 2021    
Notes Payable [Line Items]    
Fixed rate mortgages 6,100us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingAugustTwentyTwentyOneMember		 [13] 6,233us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingAugustTwentyTwentyOneMember
Interest rate 6.01%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroOneMaturingAugustTwentyTwentyOneMember		  
Scheduled maturity 2021-08 [1]  
Fixed Rate Mortgage Notes Payable | 5.62% due June 2022    
Notes Payable [Line Items]    
Fixed rate mortgages 35,222us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJuneTwentyTwentyTwoMember		 [14] 35,981us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJuneTwentyTwentyTwoMember
Interest rate 5.62%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointSixTwoMaturingJuneTwentyTwentyTwoMember		  
Scheduled maturity 2022-06 [1]  
Fixed Rate Mortgage Notes Payable | 6.08% due September 2022    
Notes Payable [Line Items]    
Fixed rate mortgages 10,718us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroEightMaturingSeptemberTwentyTwentyTwoMember		 [15] 10,930us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroEightMaturingSeptemberTwentyTwentyTwoMember
Interest rate 6.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointZeroEightMaturingSeptemberTwentyTwentyTwoMember		  
Scheduled maturity 2022-09 [1]  
Fixed Rate Mortgage Notes Payable | 6.43% due April 2023    
Notes Payable [Line Items]    
Fixed rate mortgages 11,587us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointFourThreeMaturingAprilTwentyTwentyThreeMember		 [16] 11,795us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointFourThreeMaturingAprilTwentyTwentyThreeMember
Interest rate 6.43%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointFourThreeMaturingAprilTwentyTwentyThreeMember		  
Scheduled maturity 2023-04 [1]  
Fixed Rate Mortgage Notes Payable | 6.28% due February 2024    
Notes Payable [Line Items]    
Fixed rate mortgages 14,909us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointTwoEightMaturingFebruaryTwentyTwentyFourMember		 [17] 15,598us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointTwoEightMaturingFebruaryTwentyTwentyFourMember
Interest rate 6.28%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointTwoEightMaturingFebruaryTwentyTwentyFourMember		  
Scheduled maturity 2024-02 [1]  
Fixed Rate Mortgage Notes Payable | 7.35% due June 2024    
Notes Payable [Line Items]    
Fixed rate mortgages 16,750us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeFiveMaturingJuneTwentyTwentyFourMember		 [18] 17,123us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeFiveMaturingJuneTwentyTwentyFourMember
Interest rate 7.35%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeFiveMaturingJuneTwentyTwentyFourMember		  
Scheduled maturity 2024-06 [1]  
Fixed Rate Mortgage Notes Payable | 7.60% due June 2024    
Notes Payable [Line Items]    
Fixed rate mortgages 14,535us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointSixZeroMaturingJuneTwentyTwentyFourMember		 [19] 14,849us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointSixZeroMaturingJuneTwentyTwentyFourMember
Interest rate 7.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointSixZeroMaturingJuneTwentyTwentyFourMember		  
Scheduled maturity 2024-06 [1]  
Fixed Rate Mortgage Notes Payable | 7.02% due July 2024    
Notes Payable [Line Items]    
Fixed rate mortgages 25,639us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointZeroTwoMaturingJulyTwentyTwentyFourMember		 [20] 26,153us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointZeroTwoMaturingJulyTwentyTwentyFourMember
Interest rate 7.02%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointZeroTwoMaturingJulyTwentyTwentyFourMember		  
Scheduled maturity 2024-07 [1]  
Fixed Rate Mortgage Notes Payable | 7.45% due July 2024    
Notes Payable [Line Items]    
Fixed rate mortgages 30,429us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJulyTwentyTwentyFourMember		 [21] 31,093us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJulyTwentyTwentyFourMember
Interest rate 7.45%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointFourFiveMaturingJulyTwentyTwentyFourMember		  
Scheduled maturity 2024-07 [1]  
Fixed Rate Mortgage Notes Payable | 7.30% due January 2025    
Notes Payable [Line Items]    
Fixed rate mortgages 30,253us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeZeroMaturingJulyTwentyTwentyFiveMember		 [22] 30,894us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeZeroMaturingJulyTwentyTwentyFiveMember
Interest rate 7.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SevenPointThreeZeroMaturingJulyTwentyTwentyFiveMember		  
Scheduled maturity 2025-01 [1]  
Fixed Rate Mortgage Notes Payable | 6.18% due January 2026    
Notes Payable [Line Items]    
Fixed rate mortgages 15,735us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointOneEightMaturingJanuaryTwentyTwentySixMember		 [23] 16,087us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointOneEightMaturingJanuaryTwentyTwentySixMember
Interest rate 6.18%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_SixPointOneEightMaturingJanuaryTwentyTwentySixMember		  
Scheduled maturity 2026-01 [1]  
Fixed Rate Mortgage Notes Payable | 5.31% due April 2026    
Notes Payable [Line Items]    
Fixed rate mortgages 115,291us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeOneMaturingAprilTwentyTwentySixMember		 [24] 118,128us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeOneMaturingAprilTwentyTwentySixMember
Interest rate 5.31%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointThreeOneMaturingAprilTwentyTwentySixMember		  
Scheduled maturity 2026-04 [1]  
Fixed Rate Mortgage Notes Payable | 4.30% due October 2026    
Notes Payable [Line Items]    
Fixed rate mortgages 35,125us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointThreeZeroMaturingOctoberTwentyTwentySixMember		 [25] 36,075us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointThreeZeroMaturingOctoberTwentyTwentySixMember
Interest rate 4.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointThreeZeroMaturingOctoberTwentyTwentySixMember		  
Scheduled maturity 2026-10 [1]  
Fixed Rate Mortgage Notes Payable | 4.53% due November 2026    
Notes Payable [Line Items]    
Fixed rate mortgages 39,932us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointFiveThreeMaturingNovemberTwentyTwentySixMember		 [26] 40,974us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointFiveThreeMaturingNovemberTwentyTwentySixMember
Interest rate 4.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointFiveThreeMaturingNovemberTwentyTwentySixMember		  
Scheduled maturity 2026-11 [1]  
Fixed Rate Mortgage Notes Payable | 4.70% due December 2026    
Notes Payable [Line Items]    
Fixed rate mortgages 18,645us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointSevenZeroMaturingDecemberTwentyTwentySixMember		 [27] 19,118us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointSevenZeroMaturingDecemberTwentyTwentySixMember
Interest rate 4.70%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointSevenZeroMaturingDecemberTwentyTwentySixMember		  
Scheduled maturity 2026-12 [1]  
Fixed Rate Mortgage Notes Payable | 5.84% due May 2027    
Notes Payable [Line Items]    
Fixed rate mortgages 69,397us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightFourMaturingMayTwentyTwentySevenMember		 [28] 70,856us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightFourMaturingMayTwentyTwentySevenMember
Interest rate 5.84%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FivePointEightFourMaturingMayTwentyTwentySevenMember		  
Scheduled maturity 2027-05 [1]  
Fixed Rate Mortgage Notes Payable | 4.04% due April 2028    
Notes Payable [Line Items]    
Fixed rate mortgages 17,281us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointZeroFourMaturingAprilTwentyTwentyEightMember		 [29] 17,718us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
= bfs_FourPointZeroFourMaturingAprilTwentyTwentyEightMember
Interest rate 4.04%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= bfs_FixedRateMortgageNotesPayableMember
/ us-gaap_LongtermDebtTypeAxis
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Notes Payable [Line Items]    
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Scheduled maturity 2028-06 [1]  
Fixed Rate Mortgage Notes Payable | 3.99% due September 2028    
Notes Payable [Line Items]    
Fixed rate mortgages 17,462us-gaap_SecuredDebt
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Fixed Rate Mortgage Notes Payable | 4.88% due September 2032    
Notes Payable [Line Items]    
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Notes Payable [Line Items]    
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Variable Rate Loans Payable    
Notes Payable [Line Items]    
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Scheduled maturity 2018-06 [1]  
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[1] Interest rate and scheduled maturity data presented as of December 31, 2014. Totals computed using weighted averages.
[2] The loan is collateralized by Shops at Fairfax and Boulevard shopping centers and requires equal monthly principal and interest payments totaling $156,000 based upon a weighted average 23-year amortization schedule and a final payment of $15.2 million is due at loan maturity. Principal of $729,000 was amortized during 2014.
[3] The loan is collateralized by Washington Square and requires equal monthly principal and interest payments of $264,000 based upon a 27.5-year amortization schedule and a final payment of $28.0 million at loan maturity. Principal of $1.2 million was amortized during 2014.
[4] The loan is collateralized by three shopping centers, Broadlands Village, The Glen and Kentlands Square I, and requires equal monthly principal and interest payments of $306,000 based upon a 25-year amortization schedule and a final payment of $28.4 million at loan maturity. Principal of $1.5 million was amortized during 2014.
[5] The loan is collateralized by Olde Forte Village and requires equal monthly principal and interest payments of $98,000 based upon a 25-year amortization schedule and a final payment of $9.0 million at loan maturity. Principal of $495,000 was amortized during 2014.
[6] The loan is collateralized by Countryside and requires equal monthly principal and interest payments of $133,000 based upon a 25-year amortization schedule and a final payment of $12.3 million at loan maturity. Principal of $682,000 was amortized during 2014.
[7] The loan is collateralized by Briggs Chaney MarketPlace and requires equal monthly principal and interest payments of $133,000 based upon a 25-year amortization schedule and a final payment of $12.2 million at loan maturity. Principal of $658,000 was amortized during 2014.
[8] The loan is collateralized by Shops at Monocacy and requires equal monthly principal and interest payments of $112,000 based upon a 25-year amortization schedule and a final payment of $10.6 million at loan maturity. Principal of $596,000 was amortized during 2014.
[9] The loan is collateralized by Boca Valley Plaza and requires equal monthly principal and interest payments of $75,000 based upon a 30-year amortization schedule and a final payment of $9.1 million at loan maturity. Principal of $278,000 was amortized during 2014.
[10] The loan is collateralized by Palm Springs Center and requires equal monthly principal and interest payments of $75,000 based upon a 25-year amortization schedule and a final payment of $7.1 million at loan maturity. Principal of $386,000 was amortized during 2014.
[11] The loan and a corresponding interest-rate swap closed on June 29, 2010 and are collateralized by Thruway. On a combined basis, the loan and the interest-rate swap require equal monthly principal and interest payments of $289,000 based upon a 25-year amortization schedule and a final payment of $34.8 million at loan maturity. Principal of $1,021,000 was amortized during 2014.
[12] The loan is collateralized by Jamestown Place and requires equal monthly principal and interest payments of $66,000 based upon a 25-year amortization schedule and a final payment of $6.1 million at loan maturity. Principal of $303,000 was amortized during 2014.
[13] The loan is collateralized by Hunt Club Corners and requires equal monthly principal and interest payments of $42,000 based upon a 30-year amortization schedule and a final payment of $5.0 million, at loan maturity. Principal of $133,000 was amortized during 2014.
[14] The loan is collateralized by Lansdowne Town Center and requires monthly principal and interest payments of $230,000 based on a 30-year amortization schedule and a final payment of $28.2 million at loan maturity. Principal of $759,000 was amortized during 2014.
[15] The loan is collateralized by Orchard Park and requires equal monthly principal and interest payments of $73,000 based upon a 30-year amortization schedule and a final payment of $8.6 million at loan maturity. Principal of $212,000 was amortized during 2014.
[16] The loan is collateralized by BJ’s Wholesale and requires equal monthly principal and interest payments of $80,000 based upon a 30-year amortization schedule and a final payment of $9.3 million at loan maturity. Principal of $208,000 was amortized during 2014.
[17] The loan is collateralized by Great Falls shopping center. The loan consists of three notes which require equal monthly principal and interest payments of $138,000 based upon a weighted average 26-year amortization schedule and a final payment of $6.3 million at maturity. Principal of $689,000 was amortized during 2014.
[18] The loan is collateralized by Leesburg Pike and requires equal monthly principal and interest payments of $135,000 based upon a 25-year amortization schedule and a final payment of $11.5 million at loan maturity. Principal of $373,000 was amortized during 2014.
[19] The loan is collateralized by Village Center and requires equal monthly principal and interest payments of $119,000 based upon a 25-year amortization schedule and a final payment of $10.1 million at loan maturity. Principal of $314,000 was amortized during 2014.
[20] The loan is collateralized by White Oak and requires equal monthly principal and interest payments of $193,000 based upon a 24.4 year weighted amortization schedule and a final payment of $18.5 million at loan maturity. The loan was previously collateralized by Van Ness Square. During 2012, the Company substituted White Oak as the collateral and borrowed an additional $10.5 million. Principal of $514,000 was amortized during 2014.
[21] The loan is collateralized by Avenel Business Park and requires equal monthly principal and interest payments of $246,000 based upon a 25-year amortization schedule and a final payment of $20.9 million at loan maturity. Principal of $664,000 was amortized during 2014.
[22] The loan is collateralized by Ashburn Village and requires equal monthly principal and interest payments of $240,000 based upon a 25-year amortization schedule and a final payment of $20.5 million at loan maturity. Principal of $641,000 was amortized during 2014.
[23] The loan is collateralized by Ravenwood and requires equal monthly principal and interest payments of $111,000 based upon a 25-year amortization schedule and a final payment of $10.1 million at loan maturity. Principal of $352,000 was amortized during 2014.
[24] The loan is collateralized by Clarendon Center and requires equal monthly principal and interest payments of $753,000 based upon a 25-year amortization schedule and a final payment of $70.5 million at loan maturity. Principal of $2.8 million was amortized during 2014.
[25] The loan is collateralized by Severna Park MarketPlace and requires equal monthly principal and interest payments of $207,000 based upon a 25-year amortization schedule and a final payment of $20.3 million at loan maturity. Principal of $950,000 was amortized during 2014.
[26] The loan is collateralized by Kentlands Square II and requires equal monthly principal and interest payments of $240,000 based upon a 25-year amortization schedule and a final payment of $23.1 million at loan maturity. Principal of $1,042,000 was amortized during 2014.
[27] The loan is collateralized by Cranberry Square and requires equal monthly principal and interest payments of $113,000 based upon a 25-year amortization schedule and a final payment of $10.9 million at loan maturity. Principal of $473,000 was amortized during 2014.
[28] The loan in the original amount of $73.0 million closed in May 2012, is collateralized by Seven Corners and requires equal monthly principal and interest payments of $463,200 based upon a 25-year amortization schedule and a final payment of $42.3 million at loan maturity. Principal of $1.5 million was amortized during 2014.
[29] The loan is collateralized by Hampshire Langley and requires equal monthly principal and interest payments of $95,400 based upon a 25 -year amortization schedule and a final payment of $9.5 million at loan maturity. Principal of $437,000 was amortized in 2014.
[30] The loan is collateralized by Beacon Center and requires equal monthly principal and interest payments of $203,200 based upon a 20-year amortization schedule and a final payment of $11.4 million at loan maturity. Principal of $1,251,000 was amortized in 2014.
[31] The loan is collateralized by Seabreeze Plaza and requires equal monthly principal and interest payments of $94,900 based upon a 25-year amortization schedule and a final payment of $9.5 million at loan maturity. Principal of $433,000 was amortized in 2014.
[32] The loan is a $71.6 million construction-to-permanent facility that is collateralized by and will finance a portion of the construction costs of Park Van Ness. During the construction period, interest will be funded by the loan. After conversion to a permanent loan, monthly principal and interest payments totaling $413,500 will be required based upon a 25-year amortization schedule. A final payment of $39.6 million will be due at maturity.
[33] The Company entered into a sale-leaseback transaction with its Olney property and is accounting for that transaction as a secured financing. The arrangement requires monthly payments of $60,400 which increase by 1.5% on May 1, 2015, and every May 1 thereafter. The arrangement provides for a final payment of $14.7 million and has an implicit interest rate of 8.0%. Negative amortization in 2014 totaled $119,000.
[34] The loan is a $275.0 million unsecured revolving credit facility. Interest accrues at a rate equal to the sum of one-month LIBOR plus a spread of 145 basis points. The line may be extended at the Company’s option for one year with payment of a fee of 0.15%. Monthly payments, if required, are interest only and vary depending upon the amount outstanding and the applicable interest rate for any given month.
[35] The loan is collateralized by Northrock and requires monthly principal and interest payments of approximately $47,000 and a final payment of $14.2 million at maturity. Principal of $277,000 was amortized during 2014.
[36] The loan is collateralized by Metro Pike Center and requires monthly principal and interest payments of approximately $48,000 and a final payment of $14.8 million at loan maturity. Principal of $288,000 was amortized during 2014.