Document and Entity Information: Entity Registrant Name Entity Trading Symbol Document Type Document Period End Date Amendment Flag Entity Central Index Key Current Fiscal Year End Date Entity Common Stock, Shares Outstanding Entity Filer Category Entity Current Reporting Status Entity Voluntary Filers Entity Well-known Seasoned Issuer Document Fiscal Year Focus Document Fiscal Period Focus Entity Public Float Small Business Entity Statement of Financial Position [Abstract] Current assets Cash and cash equivalents Accounts receivable from oil and gas sales Current portion note receivable Total current assets Oil and natural gas properties (full cost accounting method) Proved developed and undeveloped oil and gas properties, net of depletion Property and equipment, net of depreciation Land, buildings and equipment - oil and gas operations Note receivable Total assets Liabilities and stockholders' equity Current liabilities Accounts payable - trade (including $433 and $412due to related parties in 2018 and 2017) Accrued expenses Current portion of long term debt Total current liabilities Long-term debt Notes payable less current portion Asset retirement obligation Total liabilities Stockholders' equity Preferred stock, Series B Common stock, $.01 par value; authorized, 100,000,000 shares; issued and outstanding, 2,036,935 shares at March 31, 2018 and December 31, 2017 Additional paid-in capital Accumulated deficit Total Stockholder's equity Total liabilities & stockholders' equity Accounts payable due to related parties Series B convertible preferred stock, par value Series B convertible preferred stock, liquidation value Series B convertible preferred stock, shares authorized Series B convertible preferred stock, shares issued Series B convertible preferred stock, shares outstanding Common Stock, Par Value Common Stock, Shares Authorized Common Stock, Shares Issued Common Stock, Shares Outstanding Income Statement [Abstract] Oil and gas operations, net of royalties Total Revenues Operating expenses Oil & gas operations Corporate general and administrative Total Operating Expenses Operating earnings (loss) Other income (expense) Interest income Interest expense Other income (expense), net Total Other income (expense) Earnings (loss) from continuing operations Earnings from discontinued operations Net income (loss) applicable to common shares Net (loss) per common share from continuing operations Net income per common share from discontinued operations Net income (loss) per common share-basic and diluted Weighted average common and equivalent shares outstanding - basic Statement of Cash Flows [Abstract] Net income (loss) Adjustments to reconcile net income to net cash provided by (used in) operating activities Depreciation, depletion and amortization Write-off of retirement center assets Changes in operating assets and liabilities Other current and non-current assets Accounts payable and other liabilities Net cash provided by (used) in operating activities Cash flows from investing activities Investment in undeveloped land Fixed asset additions Net cash provided by (used) in investing activities Cash flows from financing activities Payment on notes payable Net cash provided by (used in) financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Supplemental disclosures of cash flow information Cash paid for interest on notes payable: Organization, Consolidation and Presentation of Financial Statements [Abstract] BASIS OF PRESENTATION B. NATURE OF OPERATIONS Accounting Policies [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Extractive Industries [Abstract] OIL AND GAS RESERVES Commitments and Contingencies Disclosure [Abstract] CONTINGENCIES Accounting Changes and Error Corrections [Abstract] F. NEWLY ISSUED ACCOUNTING STANDARDS Subsequent Events [Abstract] SUBSEQUENT EVENTS Oil and gas operations, net of royalties Assets, Current Assets Liabilities, Current Liabilities Stockholders' Equity Attributable to Parent Liabilities and Equity Revenues Operating Expenses Operating Income (Loss) Interest Expense Nonoperating Income (Expense) Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Increase (Decrease) in Other Operating Assets Net Cash Provided by (Used in) Operating Activities Payments to Acquire Land Payments to Acquire Productive Assets Net Cash Provided by (Used in) Investing Activities Repayments of Notes Payable Net Cash Provided by (Used in) Financing Activities Cash and Cash Equivalents, Period Increase (Decrease)