Entity Central Index Key Cover [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Entity Emerging Growth Company Entity Emerging Growth Company Entity Current Reporting Status Entity Current Reporting Status Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Entity Interactive Data Current Entity Interactive Data Current Title of 12(b) Security Security12b Title Document Annual Report Document Annual Report Document Transition Report Document Transition Report Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Incorporation, State or Country Code Entity Incorporation State Country Code Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Public Float Entity Public Float Title of 12(g) Security Security12g Title Auditor Name Auditor Name Auditor Location Auditor Location Auditor Firm ID Auditor Firm Id Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Properties and equipment (net of accumulated depreciation) (Note 3) Property Plant And Equipment Net Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Prepaid and other Prepaid Expense And Other Assets Prepaid income taxes Prepaid Taxes Deferred income taxes, discontinued operations Disposal Group Including Discontinued Operation Deferred Tax Assets Total assets Assets Liabilities: Liabilities [Abstract] Property taxes Accrual For Taxes Other Than Income Taxes Current And Noncurrent Other Other Liabilities Deferred income taxes, net Deferred Income Tax Liabilities Net Environmental remediation accrual, discontinued operations (Note 8) Liabilities Of Disposal Group Including Discontinued Operation Total liabilities Liabilities Shareholders’ equity: Stockholders Equity [Abstract] Class A common stock, $.01 par; authorized 10,000,000 shares; issued and outstanding 6,599,912 shares Common Stock Value Capital in excess of par Additional Paid In Capital Common Stock Retained earnings Retained Earnings Accumulated Deficit Total shareholders' equity Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Income Statement [Abstract] Revenue and other income: Revenues [Abstract] Revenue, leasing Operating Lease Lease Income Other income, interest Interest Income Operating Revenue and other income Revenues Expenses: Costs And Expenses [Abstract] Operating Operating Costs And Expenses General and administrative General And Administrative Expense Total expenses Costs And Expenses Income from continuing operations before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense (benefit): Income Tax Expense Benefit Continuing Operations [Abstract] Current Current Income Tax Expense Benefit Deferred Deferred Income Tax Expense Benefit Total Income tax expense Income Tax Expense Benefit Net income Net Income Loss Retained earnings, beginning Dividends on common stock based on 6,599,912 shares outstanding Dividends Common Stock Stock Retained earnings, ending Basic income per common share based upon 6,599,912 shares outstanding Earnings Per Share Basic Basic income (loss) per common share, shares outstanding Weighted Average Number Of Shares Outstanding Basic Proceeds from deferred revenue. Cash used to settle obligations. Noncash adjustment to gain on sale of discontinued operations from investing activities. Net cash provided by (used in) investing activities, discontinued operations. Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities [Abstract] Income from continuing operations Income Loss From Continuing Operations Adjustments to reconcile income from continuing operations to net cash provided by operating activities, continuing operations: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation Depreciation Deferred income taxes Deferred revenue, Parcel 20 Deferred Revenue Revenue Recognized1 Changes in assets and liabilities: Increase Decrease In Operating Capital [Abstract] Prepaid and other Increase Decrease In Prepaid Expenses Other Property taxes Increase Decrease In Property And Other Taxes Payable Other Increase Decrease In Other Operating Capital Net Net cash provided by operating activities, continuing operations Net Cash Provided By Used In Operating Activities Cash flows from investing activities, continuing operations, proceeds from Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Deferred revenue, Parcel 20 Proceeds From Deferred Revenue Discontinued operations: Net Cash Provided By Used In Investing Activities Discontinued Operations [Abstract] Cash used to settle obligations Cash Used To Settle Obligations Noncash adjustment to gain on sale of discontinued operations Noncash Adjustment To Gain On Sale Of Discontinued Operations From Investing Activities Discontinuing operations Cash Provided By Used In Investing Activities Discontinued Operations Net cash (used in) investing activities Net Cash Provided By Used In Investing Activities Cash flows from financing activities, payment of dividends Payments Of Dividends Increase (decrease) in cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents, beginning Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents, ending Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Cash paid for income taxes Income Taxes Paid Net Organization Consolidation And Presentation Of Financial Statements [Abstract] Description of business Nature Of Operations Accounting Policies [Abstract] Summary of significant accounting policies Significant Accounting Policies [Text Block] Property Plant And Equipment [Abstract] Properties and equipment Property Plant And Equipment Disclosure [Text Block] Other Liabilities Disclosure [Abstract] Liabilities, other Other Liabilities Disclosure [Text Block] Debt Disclosure [Abstract] Note Payable - Revolving Credit Line Debt Disclosure [Text Block] Leases [Abstract] Description of leasing arrangements Operating Leases Of Lessor Disclosure [Text Block] Income Tax Disclosure [Abstract] Income taxes, continuing operations Income Tax Disclosure [Text Block] Discontinued operations and environmental incident. Discontinued Operations And Disposal Groups [Abstract] Discontinued operations and environmental incident Discontinued Operations And Environmental Incident [Text Block] Subsequent Events [Abstract] Subsequent event Subsequent Events [Text Block] Principles of consolidation Consolidation Policy [Text Block] Use of estimates Use Of Estimates Fair value of financial instruments Fair Value Of Financial Instruments Policy Properties and equipment Property Plant And Equipment Policy [Text Block] Cash and cash equivalents Cash And Cash Equivalents Policy [Text Block] Environmental incidents Environmental Cost Expense Policy Disclosure of accounting policy for revenue recognition for operating leases. Revenue Recognition Operating Leases Policy Revenue Recognition Operating Leases Policy Income taxes Income Tax Policy [Text Block] Legal fees Legal Costs Policy [Text Block] Basic earnings per common share Earnings Per Share Policy [Text Block] Recently adopted and issued accounting pronouncements New Accounting Pronouncements Policy Policy [Text Block] Documents Incorporated by Reference Documents Incorporated By Reference [Text Block] Properties and Equipment Schedule Of Property Subject To Or Available For Operating Lease [Text Block] Summary of Liabilities, Other Other Liabilities Table [Text Block] Tabular disclosure of future minimum rental payments to be received under noncancelable long term leases. Minimum Future Contractual Rental Payments to be Received Schedule Of Long Term Lease Minimum Future Contractual Rental Payments To Be Received Table [Text Block] Company's Revenue from Major Tenants Schedule Of Revenue By Major Customers By Reporting Segments Table [Text Block] Summary of Income Tax Expense (Benefit) from Continuing Operations Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] Reconciliation of Income Tax Provision from Continuing Operations Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] Deferred Tax Assets and Liabilities Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] Schedule of accounting policies. Schedule Of Accounting Policies [Table] Schedule Of Accounting Policies [Table] Schedule Of Accounting Policies [Table] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Schedule Of Accounting Policies [Line Items] Schedule Of Accounting Policies [Line Items] Outstanding balance of cash equivalents Cash Equivalents At Carrying Value Maximum insurance on non-interest bearing bank accounts Cash F D I C Insured Amount Remaining term of the long term land and billboard leases for which the company is the lessor. Period of lease Period Of Lease Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Long-Lived Tangible Asset Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset Property Plant And Equipment Type [Domain] Building and Improvements, Steeple Street [Member] Building And Building Improvements [Member] Office Equipment [Member] Office Equipment [Member] Major Property Class Major Property Class [Axis] Major Property Class Major Property Class [Domain] Properties on lease or held for lease, land and land improvements. Land and Land Improvements on Lease or Held for Lease [Member] Properties On Lease Or Held For Lease Land And Land Improvements [Member] Properties on lease or held for lease, office equipment. Office Equipment [Member] Properties On Lease Or Held For Lease Office Equipment [Member] Land improvements On lease or held for lease member. Land Improvements on Lease or Held for Lease [Member] Land Improvements On Lease Or Held For Lease [Member] Properties on lease or held for lease steeple street property. Steeple Street Property [Member] Properties On Lease Or Held For Lease Steeple Street Property [Member] Property, Plant and Equipment [Line Items] Property Plant And Equipment [Line Items] Estimated Useful Life Property Plant And Equipment Useful Life Properties on lease or held for lease, gross Property Subject To Or Available For Operating Lease Gross Less accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Properties and equipment net Carrying value as of the balance sheet date of deposits and prepaid rent. Deferred revenue, Parcel 20 Contract With Customer Liability Accrued professional fees Accrued Professional Fees Current And Noncurrent Deposits and prepaid rent Deposits And Prepaid Rent Accrued payroll and related costs Employee Related Liabilities Current And Noncurrent Other Other Sundry Liabilities Liabilities, other Deb service coverage ratio. Limitation on the purchase of outstanding capital stock. Line Of Credit Facility [Table] Line Of Credit Facility [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category Mortgage Loans On Real Estate Description Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category Mortgage Loans On Real Estate Loan Category [Domain] Property [Member] First Mortgage [Member] Variable Rate Variable Rate [Axis] Variable Rate Variable Rate [Domain] LIBOR [Member] London Interbank Offered Rate L I B O R [Member] Lender Name Line Of Credit Facility [Axis] Line of Credit Facility, Lender Line Of Credit Facility Lender [Domain] BankRI. BankRI [Member] B Ank R I [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Line [Member] Line Of Credit [Member] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Revolving credit line, maximum borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Maturity date Debt Instrument Maturity Date Interest rate, description Line Of Credit Facility Interest Rate Description Variable rate basis Debt Instrument Description Of Variable Rate Basis Interest rate Debt Instrument Basis Spread On Variable Rate1 Revolving credit line, collateral, description Line Of Credit Facility Collateral Revolving credit line, covenant terms Line Of Credit Facility Covenant Terms Debt service coverage ratio Debt Service Coverage Ratio Limitation on the purchase of outstanding capital stock Limitation On Purchase Of Outstanding Capital Stock Advances made under line Line Of Credit Number of parcels upon which improvements have been completed. Number of long term land leases. Schedule Of Operating Leased Assets [Table] Schedule Of Operating Leased Assets [Table] Property Subject to or Available for Operating Lease Property Subject To Or Available For Operating Lease [Axis] Property Subject to or Available for Operating Lease Property Subject To Or Available For Operating Lease [Domain] Triple net lease. Triple Net Lease [Member] Triple Net Lease [Member] Termination of parcel twenty lease. Termination of Parcel 20 Lease [Member] Termination Of Parcel Twenty Lease [Member] Parcel six C. Parcel (6C) [Member] Parcel Six C [Member] Lamar lease. Lamar Lease [Member] Lamar Lease [Member] Metropark, Ltd. Metropark Ltd [Member] Metropark Ltd [Member] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Number of long-term land leases Number Of Long Term Land Leases Number of parcels upon which improvements have been completed Number Of Parcels Upon Which Improvements Have Been Complete Term of leases Lessor Operating Lease Term Of Contract Real property taxes. Leasing revenue Real property taxes Real Property Taxes The amount of real property taxes attributable to Company land paid by tenants. Estimated real property taxes attributable to the company land Estimated Real Property Taxes Attributable To Company Land Number of long term land leases with contingent rent receivable. Amount of contingent rental revenue recognized for the period under lease. Number of long-term land leases with contingent rent receivable Number Of Long Term Land Leases With Contingent Rent Receivable Contingent revenue from leasing of parcel of land Operating Leases Income Statement Contingent Rental Revenue Real estate taxes paid by tenant. Annual rent Lessor Operating Lease Payments To Be Received Next Twelve Months Real estate taxes paid by the tenant Real Estate Taxes Paid By Tenant Annual real estate tax expense Real Estate Tax Expense Operating expenses Operating Expenses Number of advertising location leased. The number of units under operating lease arrangements. Lease expiration year. Percentage of annual increment in base rent of lease. Period for advance receipt of percentage of gross revenue on leases. Period to recognize specified lease revenue. Percentage of revenue receivable due in proportion of gross revenue of standard billboard. Percentage of revenue receivable due in proportion of gross revenue of electronic billboard. Operating lease, percentage rent. Number of advertising locations Number Of Advertising Location Leased Number of billboard faces along interstate and primary highways leased Number Of Units Subject To Or Available For Operating Lease Lease expiration year Lease Expiration Year Annual increment in base rent of lease, percentage Percentage Of Annual Increment In Base Rent Of Lease Period for advance receipt of percentage of gross revenue on leases Period For Advance Receipt Of Percentage Of Gross Revenue On Leases Period to recognize specified lease revenue Period To Recognize Specified Lease Revenue Percentage of revenue due in proportion of gross revenues from each standard billboard Percentage Of Revenue Receivable Due In Proportion Of Gross Revenue Of Standard Billboard Percentage of revenue due in proportion of gross revenues from each electronic billboard Percentage Of Revenue Receivable Due In Proportion Of Gross Revenue Of Electronic Billboard Percentage rents Operating Lease Percentage Rent Notice period for termination of lease. Operating leases income statement decrease in contingent rental revenue. Threshold parking revenue per month for scheduled rental payments by lessee. Percentage of revenue in excess of threshold parking revenue. Notice period of lease Notice Period For Termination Of Lease Decrease in revenue Operating Leases Income Statement Decrease In Contingent Rental Revenue Threshold parking revenue per month for scheduled rental payments by lessee Threshold Parking Revenue Per Month For Scheduled Rental Payments By Lessee Percentage of revenue in excess of threshold parking revenue Percentage Of Revenue In Excess Of Threshold Parking Revenue Payments receivable Lessor Operating Lease Payments To Be Received Lessor Operating Lease Payments Fiscal Year Maturity [Abstract] 2022 2023 Lessor Operating Lease Payments To Be Received Two Years 2024 Lessor Operating Lease Payments To Be Received Three Years 2025 Lessor Operating Lease Payments To Be Received Four Years 2026 Lessor Operating Lease Payments To Be Received Five Years 2027 - 2153 Lessor Operating Lease Payments To Be Received Thereafter Total Excess of straight-line rentals over contractual payments Operating Lease Lease Income Lease Payments Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Major Customers [Member] Customer Concentration Risk [Member] Customer Major Customers [Axis] Customer Name Of Major Customer [Domain] Lamar Outdoor Advertising Llc. Lamar Outdoor Advertising, LLC [Member] Lamar Outdoor Advertising Llc [Member] HGIT Center Place. HGIT Center Place [Member] H G I T Center Place [Member] 1701 R.C. Sarasota Invest, LLC. 1701 R.C. Sarasota Invest, LLC [Member] One Seven Zero One R C Sarasota Invest L L C [Member] Waterplace condominiums. Waterplace Condominiums [Member] Waterplace Condominiums [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Entity-Wide Revenue Current: Current Income Tax Expense Benefit Continuing Operations [Abstract] Federal Current Federal Tax Expense Benefit State Current State And Local Tax Expense Benefit Total Deferred: Deferred Income Tax Expense Benefit Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense Benefit State Deferred State And Local Income Tax Expense Benefit Total Computed "expected" tax Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate Increase in "expected" tax resulting from state income tax, net of federal income tax benefit Income Tax Reconciliation State And Local Income Taxes Nondeductible expenses and other Income Tax Reconciliation Nondeductible Expense Income tax rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Deferred tax liabilities accounts receivable. Amount of deferred tax liability attributable to taxable temporary differences from insurance premiums and accrued leasing revenues. Deferred tax assets accrued property taxes. Components Of Deferred Tax Assets And Liabilities [Abstract] Gross deferred tax liabilities: Deferred Tax Liabilities [Abstract] Property having a financial statement basis in excess of tax basis Deferred Tax Liabilities Property Plant And Equipment Accounts receivable Deferred Tax Liabilities Accounts Receivable Deferred income - Conversion to cash basis of accounting for tax purposes Deferred Tax Liabilities Tax Deferred Income Insurance premiums and accrued leasing revenues Deferred Tax Liabilities Insurance Premiums And Accrued Revenues Gross deferred tax liabilities Deferred Income Tax Liabilities Gross deferred tax assets: Deferred Tax Assets Gross [Abstract] Allowance for doubtful accounts Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts Prepaid rent Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Rent Accounts payable and accrued expenses Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities Accrued property taxes Deferred Tax Assets Accrued Property Taxes Deferred income, Parcel 20 Deferred Tax Assets Deferred Income Deferred Tax Assets, Gross Deferred Tax Assets Gross Deferred tax liabilities, net of deferred tax assets Number of wholly owned subsidiaries. Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Disposal Group Name Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Axis] Disposal Group Name Disposal Groups Including Discontinued Operations Name [Domain] Terminal. Terminal [Member] Terminal [Member] Disposal Group Classification Disposal Group Classification [Axis] Disposal Group Classification Disposal Group Classification [Domain] Sale of petroleum storage facility and related assets. Sale of Petroleum Segment [Member] Sale Of Petroleum Storage Facility And Related Assets [Member] Loss Contingency Nature Loss Contingencies By Nature Of Contingency [Axis] Loss Contingency, Nature Loss Contingency Nature [Domain] Environmental incident nineteen ninety four. Environmental Incident 1994 [Member] Environmental Incident Nineteen Ninety Four [Member] Sale of petroleum segment. Sale of Petroleum Segment [Member] Sale Of Petroleum Segment [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Number of wholly owned subsidiaries Number Of Wholly Owned Subsidiaries Costs incurred related to environmental remediation Environmental Remediation Expense Environmental remediation Environmental Exit Costs Costs Accrued To Date Disposal group including discontinued operation actual cost of project. Percentage of obligation on cost in excess of actual cost. Entities obligation on cost in excess of actual cost The Company's maximum additional cost obligation pursuant to the letter agreement. Sharing arrangement percentage. Reduced sales price Supplemental Deferred Purchase Price Sharing arrangement percentage Sharing Arrangement Percentage Actual cost of the project Disposal Group Including Discontinued Operation Actual Cost Of Project Percentage of obligation on cost in excess of actual cost Percentage Of Obligation On Cost In Excess Of Actual Cost Entities obligation on cost in excess of actual cost Entities Obligation On Cost In Excess Of Actual Cost Maximum additional obligation Entities Maximum Additional Obligation Estimate of possible loss Loss Contingency Estimate Of Possible Loss Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Dividends on common stock, per share Common Stock Dividends Per Share Declared Dividend declared date Dividends Payable Date Declared Day Month And Year Dividend record date Dividends Payable Date Of Record Day Month And Year Dividend payable date Dividend Payable Date To Be Paid Day Month And Year