XML 17 R7.htm IDEA: XBRL DOCUMENT v3.25.1

Consolidated Statement of Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Distributions payable common stock, per share (in usd per share)	$ 0.59	$ 0.59
Distributions partnership units, per unit (in usd per share)	$ 0.59	$ 0.59
Restricted Stock Units (RSUs) | Twinbrook Metro Station
Restricted units released pursuant to first escrow release, shares		306,512
Limited Partner
Issuance of partnership units pursuant to dividend reinvestment plan (in shares)	45,326
Series D Cumulative Redeemable, 30,000 shares issued and outstanding | O 2025 Q1 Dividends
Distributions payable on preferred stock, per share (in usd per share)	$ 38.28
Series D Cumulative Redeemable, 30,000 shares issued and outstanding | O 2024 Q1 Dividends
Distributions payable on preferred stock, per share (in usd per share)		$ 38.28
Series E Cumulative Redeemable, 44,000 shares issued and outstanding | O 2025 Q1 Dividends
Distributions payable on preferred stock, per share (in usd per share)	$ 37.50
Series E Cumulative Redeemable, 44,000 shares issued and outstanding | O 2024 Q1 Dividends
Distributions payable on preferred stock, per share (in usd per share)		$ 37.50

X

- Definition

Partnership Units Issued During Period

+ References

No definition available.

+ Details

Name:	bfs_PartnershipUnitsIssuedDuringPeriod
Namespace Prefix:	bfs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Restricted Units Released Pursuant to First Escrow Release, Shares

+ References

No definition available.

+ Details

Name:	bfs_RestrictedUnitsReleasedPursuantToFirstEscrowReleaseShares
Namespace Prefix:	bfs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Cash dividends declared or paid to each outstanding limited partnership unit during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

+ Details

Name:	us-gaap_DistributionsPerLimitedPartnershipUnitOutstanding
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate dividends declared during the period for each share of preferred stock outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=bfs_TwinbrookMetroStationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_LimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=bfs_SeriesDCumulativeRedeemablePreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=bfs_O2025Q1DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=bfs_O2024Q1DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=bfs_SeriesECumulativeRedeemablePreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: