Accounts Payable and Accrued Liabilities [Abstract] Accounts payable and accrued expenses: Accrual for Taxes Other than Income Taxes Property taxes Accrued Income Taxes Income taxes payable Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation total Additional amount received per barrel of throughput in excess of number of barrels identified. Additional Amount Received Per Barrel of Throughput Additional amount per barrel of Throughput Agreement Additional Paid in Capital, Common Stock Capital in excess of par Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Amendment Flag Amendment Flag Amortization of Deferred Charges Amortization of deferred costs Annual basic rent. Annual Basic Rent Annual base rent Assets Assets Total assets Total assets for operating segments Assets [Abstract] ASSETS Assets for operating segments. Assets For Operating Segments [Abstract] Assets for operating segments: Building and improvements Steeple Street. Building And Improvements Steeple Street [Member] Building and Improvements, Steeple Street [Member] Buildings and structures. Buildings And Structures [Member] Buildings and Structures [Member] Cash Cash, ending Cash, beginning Cash Cash and Cash Equivalents, at Carrying Value Corporate cash Cash and Cash Equivalents, Period Increase (Decrease) Increase in cash Cash paid for. Cash Paid For [Abstract] Cash paid for: Class of Stock [Domain] Class of Stock [Domain] Common Class A [Member] Common Class A [Member] Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, Value, Issued Common stock Components of Deferred Tax Assets and Liabilities [Abstract] Components of Deferred Tax Assets and Liabilities [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Contractual. Contractual [Member] Contractual [Member] Corporate, Non-Segment [Member] Unallocated [Member] The aggregate total of expense related to operating lease revenue. Cost Of Operating Leases Income Statement Lease Leasing Costs and Expenses Total expenses Costs and Expenses [Abstract] Expenses: Counterparty Name [Axis] Counterparty Name [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Current Income Tax Expense (Benefit) Current Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Description Dividend notes description Debt Instrument, Face Amount Dividend notes Debt Instrument, Interest Rate, Stated Percentage Dividend notes annual interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Maturity Date Maturity date of long term loan Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Deferred Costs, Noncurrent Unamortized deferred agreement cost Deferred Income Tax Expense (Benefit) Deferred Deferred income taxes Deferred Tax Liabilities, Gross Gross deferred tax liabilities Deferred Tax Assets, Net of Valuation Allowance Deferred tax assets Deferred Tax Liabilities, Net Deferred income taxes, net Deferred tax liabilities, net of deferred tax assets Deferred Tax Liabilities, Gross [Abstract] Gross deferred tax liabilities: Amount of deferred tax liability attributable to taxable temporary differences from insurance premiums and accrued leasing revenues. Deferred Tax Liabilities Insurance Premiums And Accrued Revenues Insurance premiums and accrued leasing revenues Deferred Tax Liabilities, Property, Plant and Equipment Property having a financial statement basis in excess of tax basis Depreciation Depreciation Total consolidated depreciation Depreciation for operating segments. Depreciation For Operating Segments [Abstract] Depreciation for operating segments: Description Of Business [Line Items] Description Of Business [Line Items] Description Of Business [Line Items] Description Of Business [Table] Description Of Business [Table] Description Of Business [Table] Dividend notes. Dividend Notes [Member] Dividend Notes [Member] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share, Basic Basic income per share based upon 6,599,912 shares outstanding Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Environmental Cost, Expense Policy [Policy Text Block] Environmental incidents Environmental Exit Costs, Costs Accrued to Date Environmental remediation Environmental Incident Nineteen Ninety Four [Member] Environmental Incident Nineteen Ninety Four [Member] Environmental Incident 1994 [Member] Estimated cost related to design install and operate system. Estimated Cost Related To Design Install And Operate System Estimated cost related to design install and operate the system Estimated real property taxes attributable to the company land. Estimated Real Property Taxes Attributable To Company Land Estimated real property taxes attributable to the company land Expense incurred related to design install and operate system. Expense Incurred Related To Design Install And Operate System Expense incurred related to design install and operate the system Facility [Member] Facility [Member] Facility [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair value of financial instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Fair value of financial instruments Future notice period for termination of lease. Future Notice Period For Termination Of Lease Notice period of lease General and Administrative Expense General and administrative Income loss before income taxes for operating segments. Income Loss Before Income Taxes For Operating Segments [Abstract] Income before income taxes for operating segments: Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Income before income taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income taxes Income Taxes Paid Income taxes Income Tax Expense (Benefit) Total Income tax expense Income Tax Expense (Benefit), Continuing Operations [Abstract] Income tax expense (benefit): Increase (Decrease) in Operating Capital Other, principally net changes in prepaids, accounts payable, accrued expenses and current income taxes Interest and Dividends Payable Dividend notes payable Interest Expense Interest expense Interest Expense [Abstract] Interest on notes: Interest Expense, Borrowings Bank Interest Expense, Subordinated Notes and Debentures Dividend notes Interest Paid Interest Lamar lease. Lamar Lease [Member] Lamar Lease [Member] Land and Land Improvements [Member] Land and Land Improvements [Member] Lease Agreement Term Lease Agreement Term Agreement period Lease agreement termination date. Lease Agreement Termination Date Lease agreement termination date Lease Arrangement, Type [Axis] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Domain] Lease Arrangement, Type [Domain] Lease expiration year. Lease Expiration Year Lease expiration year Leases [Abstract] Leases [Abstract] Leases of Lessor Disclosure [Text Block] Description of leasing arrangements Leasing. Leasing [Member] Leasing [Member] Liabilities Total liabilities Liabilities [Abstract] Liabilities: Liabilities and Equity Total liabilities and shareholders' equity Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Long-term Debt [Text Block] Notes payable Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Long term leases. Long Term Leases [Member] Long Term Leases [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Major Property Class [Axis] Major Property Class [Axis] Major Property Class [Domain] Major Property Class [Domain] Maximum barrel threshold in throughput agreement. Maximum Barrel Threshold In Throughput Agreement Maximum barrel threshold in throughput agreement Maximum [Member] Maximum [Member] The threshold number of barrels for which the Company will receive additional amounts if throughput is in excess of. Minimum Barrel Threshold In Throughput Agreement Minimum barrel threshold in throughput agreement Minimum percentage of consent of dividend notes holders. Minimum Percentage Of Consent Of Dividend Notes Holders Consent of the dividend notes holders required for to grant any mortgages The aggregate total of expenses related to petroleum storage facility revenue. Natural Gas Storage Expenses Petroleum storage facility Nature of Operations [Text Block] Description of business Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities: Net Income (Loss) Attributable to Parent Net income Net income New Accounting Pronouncements, Policy [Policy Text Block] New accounting standards Non Cancellable Lease Period Non Cancellable Lease Period Non-cancellable agreement term Notice period for termination of lease. Notice Period For Termination Of Lease Notice prior to expiration of initial or extension term Notice period for termination of long term lease. Notice Period For Termination Of Long Term Lease Notice period of lease Number Of Additional Extended Terms Number Of Additional Extended Terms Agreement additional extended term Number of advertising location leased. Number Of Advertising Location Leased Number of advertising locations Number of long term land leases. Number Of Long Term Land Leases Number of long-term land leases Number of Operating Segments Number of segments Number of parcels upon which improvements have been completed. Number Of Parcels Upon Which Improvements Have Been Complete Number of parcels upon which improvements have been completed Number of shell barrels. Number Of Shell Barrels Number of shell barrels at terminal Number of tenants occupying 65% of building. Number Of Tenants Occupying Sixty Five Percent Of Building Number of tenants occupying 65% of building Office Equipment [Member] Office Equipment [Member] Oil and Gas In Process Activities [Line Items] Oil and Gas In Process Activities [Line Items] Oil and Gas In Process Activities [Table] Oil and Gas In Process Activities [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating Leases, Income Statement, Contingent Revenue Contingent Leases Operating Leases, Income Statement, Initial Direct Costs Execution of petroleum storage services agreement fee Operating Leases, Income Statement, Lease Revenue Leasing Total revenues Operating Leases, Income Statement, Minimum Lease Revenue Contractual Leases Operating Segments [Member] Operating Segments [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Principles of consolidation and basis of presentation Other Assets Other assets Other Liabilities Other Parcel six B and six C. Parcel SixB And SixC [Member] Parcel (6B) and (6C) [Member] Parcel six B. Parcel Six B [Member] Parcel (6B) [Member] Parcel six C. Parcel Six C [Member] Parcel (6C) [Member] Payments to Acquire Property, Plant, and Equipment Purchases of properties and equipment Percentage of annual increment in base rent of lease. Percentage Of Annual Increment In Base Rent Of Lease Annual increment in base rent of lease, percentage Percentage of building occupied by four tenants. Percentage Of Building Occupied By Four Tenants Percentage of building occupied by four tenants Percentage of revenue receivable due in proportion of gross revenue of electronic billboard. Percentage Of Revenue Receivable Due In Proportion Of Gross Revenue Of Electronic Billboard 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 Receivable Due In Proportion Of Gross Revenue Of Standard Billboard Percentage of revenue due in proportion of gross revenues from each standard billboard Period for advance receipt of percentage of gross revenue on leases. 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 Period to recognize specified lease revenue Petroleum pipeline connections between terminal and pier. Petroleum Pipeline Connections Between Terminal And Pier Number of petroleum pipelines connections between Pier and the Terminal Petroleum Storage Facility And Environmental Incidents [Abstract] Petroleum Storage Facility And Environmental Incidents [Abstract] Petroleum Storage Facility And Environmental Incidents [Abstract] Entire disclosure for petroleum storage facility and environmental incidents. Petroleum Storage Facility And Environmental Incidents [Text Block] Petroleum storage facility and environmental incidents Petroleum storage facility on lease. Petroleum Storage Facility On Lease [Member] Petroleum Storage Facility, on Lease [Member] Petroleum storage. Petroleum Storage [Member] Petroleum Storage [Member] Petroleum storage revenue. Petroleum Storage Revenue Petroleum storage facility Petroleum Storage Services Agreement [Member] Petroleum Storage Services Agreement [Member] Petroleum Storage Services Agreement [Member] Prepaid Expense and Other Assets Prepaid and other Proceeds from Collection of Lease Receivables Annual rent Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Properties on lease or held for lease. Properties On Lease Or Held For Lease [Member] Properties on Lease or Held for Lease [Member] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment Disclosure [Text Block] Properties and equipment Property, Plant and Equipment, Gross Properties and equipment gross Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Net Properties and equipment (net of accumulated depreciation) Properties and equipment net Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property Subject to or Available for Operating Lease, Accumulated Depreciation Less accumulated depreciation: Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Domain] Property Subject to or Available for Operating Lease [Domain] Property Subject to or Available for Operating Lease, Gross Properties on lease or held for lease Property Subject to or Available for Operating Lease, Number of Units Number of billboard faces along interstate and primary highways leased Property tax expense for operating segments. Property Tax Expense For Operating Segments [Abstract] Property tax expense for operating segments: Range [Axis] Range [Axis] Range [Domain] Range [Domain] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Real Estate Tax Expense Total consolidated property tax expense Property tax expense Real estate taxes Real property taxes eligible for reimbursement in excess of minimum established amount. Real Property Taxes Eligible For Reimbursement In Excess Of Minimum Established Amount Real property taxes eligible for reimbursement in excess of minimum established amount Real Property Taxes Reimbursement Eligibility Commencement Date Real Property Taxes Reimbursement Eligibility Commencement Date Real Property Taxes Reimbursement Eligibility commencement date Tabular disclosure of all significant reconciling items in the reconciliation of reportable segments to the consolidated entity. Reconciliation Of Segment Information Table [Text Block] Reconciliation of Segment Information Remaining accrual for environmental remediation. Remaining Accrual For Environmental Remediation Remaining accrual for environmental remediation Repayments of Long-term Debt Principal payments on note payable, bank Counterparty Name [Domain] Counterparty Name [Domain] Retained Earnings (Accumulated Deficit) Retained earnings