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[Axis] Equity Components [Axis] Related Party Related Party [Member] Class of Stock [Line Items] Class of Stock [Line Items] Agreement Ending October 1, 2030 Agreement Ending October 1, 2030 [Member] Agreement Ending October 1, 2030 Partnership units Proceeds from Issuance of Common Limited Partners Units Entity Interactive Data Current Entity Interactive Data Current Number of shopping centers Number of Stores Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Limited Partner Limited Partner [Member] Entity Small Business Entity Small Business Total comprehensive income attributable to Saul Centers, Inc. 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Phase II Ashland Square [Member] Ashland Square Other expenses Segment Reporting, Other Segment Item, Amount Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Depository shares to cumulative redeemable preferred stock ratio Depository Shares To Redeemable Preferred Stock Ratio Depository Shares to Redeemable Preferred Stock Ratio Repayments on mortgage notes payable Repayments of Secured Debt Other assets Other Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Debt outstanding with fixed-rate Long-Term Debt, Percentage Bearing Fixed Interest, Amount Interest incurred Interest Expense, Debt Notes payable, principal balance Notes Payable Amortization schedule (in years) Debt Instrument, Amortization Period Debt Instrument, Amortization Period Options exercised (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Preferred stock dividends Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Schedule of Location in the Financial Statements of the Gain or Loss Recognized on Interest Rate Derivatives Designated as Cash Flow Hedges Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Organization, Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Non-cash share-based compensation costs Share-Based Payment Arrangement, Noncash Expense Land Land Share-based compensation arrangement by share-based payment award, options, grants since inception (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants Since Inception Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants Since Inception Customer [Domain] Customer [Domain] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Schedule of Fair Value and Location of the Interest Rate Swaps, and the Effect of Designating the Interest Rate Swaps as Cash Flow Hedges Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in USD per share) Earnings Per Share, Basic Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Twinbrook Quarter - Other Twinbrook Quarter Other Loans [Member] Twinbrook Quarter Other Loans Additions to development and redevelopment projects Payments to Develop Real Estate Assets Amounts of gain (loss) recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Distributions in excess of accumulated earnings Retained Earnings (Accumulated Deficit) Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Proceeds from mortgage notes payable Proceeds from Issuance of Secured Debt Common stock Common Stock [Member] Rent expense Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Series D Cumulative Redeemable, 30,000 shares issued and outstanding Series D Cumulative Redeemable Preferred Stock Series D preferred stockholders Series D Cumulative Redeemable Preferred Stock [Member] Series D Cumulative Redeemable Preferred Stock [Member] Noncontrolling interests Noncontrolling Interest [Abstract] Revenue adjustments Straight Line Rent Adjustments Derivative Contract [Domain] Derivative Contract [Domain] Percentage of total revenue (as a percent) Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Great Falls Center Mortgage Great Falls Center Mortgage [Member] Great Falls Center Mortgage Accounts Receivable, Accrued Income and Allowance for Doubtful Accounts Receivable [Policy Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and equity Liabilities and Equity Weighted average effect of dilutive options Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Depositary Shares each representing 1/100th of a share of 6.125% Series D Cumulative Redeemable Preferred Stock, Par Value $0.01 Per Share Series D Preferred Stock [Member] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Total Saul Centers, Inc. Parent [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Proceeds from the issuance of: Proceeds from Issuance or Sale of Equity [Abstract] Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Outstanding options at beginning of period Outstanding options at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Restricted stock forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and administrative General and Administrative Expense Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, 1,000,000 shares authorized: Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Number of real estate properties Number of Real Estate Properties Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Distributions payable preferred stock: Dividends, Preferred Stock [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Pay vs Performance Disclosure [Line Items] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Giant Food Giant Food [Member] Giant Food [Member] Additional paid-in capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Director Director [Member] Shared Services Agreement Shared Services Agreement [Member] Shared Services Agreement Dividends [Axis] Dividends [Axis] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Schedule of Option Activity Schedule of Stock Options Roll Forward [Table Text Block] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Depreciation and amortization of deferred leasing costs Depreciation and amortization of deferred leasing costs Depreciation and amortization of deferred leasing costs Depreciation, Depletion and Amortization Twinbrook Quarter Twinbrook Quarter [Member] Twinbrook Quarter Entity Address, Address Line Two Entity Address, Address Line Two Due to directors' deferred compensation plan (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Real Estate [Abstract] Real Estate [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Restricted stock vested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Deferred compensation (in shares) Deferred Compensation Arrangement with Individual, Shares Issued Twinbrook Quarter Twinbrook Quarter Construction Loans [Member] Twinbrook Quarter Construction Loans Deferred leasing costs, net Deferred Initial Direct Cost, Lease, after Accumulated Amortization Non-operating Development Properties Nonoperating Development Properties [Member] Nonoperating Development Properties [Member] Customer Concentration Risk Customer Concentration Risk [Member] Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] O 2025 Q2 Dividends O 2025 Q2 Dividends [Member] O 2025 Q2 Dividends Net income attributable to Saul Centers, Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from disposition of property Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Due to restricted stock awards and forfeitures Stock Issued During Period, Value, Restricted Stock Award, Gross Exercisable options at end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Fair Value Derivative Asset, Subject to Master Netting Arrangement, before Offset Total assets per segment Segment Reporting, Assets Segment Reporting, Assets Accumulated capitalized interest costs Accumulated Capitalized Interest Costs Revenues Revenues [Abstract] Long-term debt, term (in years) Long-Term Debt, Term Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]