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    <us-gaap:BusinessDescriptionAndBasisOfPresentationTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE A: BASIS OF PRESENTATION&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;The accompanying unaudited consolidated financial statements&#13;include the accounts of New Concept Energy, Inc. and its majority-owned subsidiaries (collectively, &amp;#8220;NCE&amp;#8221; or the &amp;#8220;Company&amp;#8221;).&amp;#160;&amp;#160;All&#13;significant intercompany transactions and accounts have been eliminated.&amp;#160;&amp;#160;Certain reclassifications have been made to&#13;the prior year revenue and operating expense amounts in the statement of operations to conform to the current year presentation.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;The unaudited financial statements included herein have been&#13;prepared by the Company without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. The&#13;financial statements reflect all adjustments that are, in the opinion of management, necessary to fairly present such information. All&#13;such adjustments are of a normal recurring nature. Although the Company believes that the disclosures are adequate to&#13;make the information presented not misleading, certain information and footnote disclosures, including a description of significant&#13;accounting policies normally included in financial statements prepared in accordance with accounting principles generally accepted&#13;in the United States of America, have been condensed or omitted pursuant to such rules and regulations.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;These financial statements should be read in conjunction&#13;with the consolidated financial statements and notes thereto included in the Company&amp;#8217;s Annual Report on Form 10-K for the&#13;fiscal year ending December 31, 2017. Operating results for the three and nine month periods ended September 30, 2018&#13;are not necessarily indicative of the results that may be expected for any subsequent quarter or for the fiscal year ending December&#13;31, 2018.&lt;/p&gt;</us-gaap:BusinessDescriptionAndBasisOfPresentationTextBlock>
    <us-gaap:NatureOfOperations contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE B: NATURE OF OPERATIONS&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;The Company operates oil and gas wells and mineral leases&#13;in Athens and Meigs Counties in Ohio and in Calhoun, Jackson and Roane Counties in West Virginia through its wholly owned subsidiaries&#13;Mountaineer State Energy, Inc. and Mountaineer State Operations, LLC.&lt;/p&gt;</us-gaap:NatureOfOperations>
    <us-gaap:SignificantAccountingPoliciesTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE C: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;We consider accounting policies related to our estimates&#13;of depreciation amortization and depletion, segments, oil and gas properties, oil and gas reserves, gas gathering assets, office&#13;and field equipment, revenue recognition and gas imbalances, leases, revenue recognition for real estate operations, impairment,&#13;and sales of real estate as significant accounting policies. The policies include significant estimates made by management&#13;using information available at the time the estimates are made. However, these estimates could change materially if&#13;different information or assumptions were used. These policies are summarized in our Annual Report on Form 10-K for&#13;the year ended December 31, 2017.&lt;/p&gt;</us-gaap:SignificantAccountingPoliciesTextBlock>
    <us-gaap:OilAndGasPropertiesTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE D: OIL AND GAS RESERVES&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company uses the full cost method&#13;of accounting for its investment in oil and natural gas properties. Under this method of accounting, all costs of acquisition,&#13;exploration and development of oil and natural gas properties (including such costs as leasehold acquisition costs, geological&#13;expenditures, dry hole costs, tangible and intangible development costs and direct internal costs) are capitalized as the cost&#13;of oil and natural gas properties when incurred.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The full cost method requires the Company&#13;to calculate quarterly, by cost center, a &amp;#8220;ceiling,&amp;#8221; or limitation on the amount of properties that can be capitalized&#13;on the balance sheet. To the extent capitalized costs of oil and natural gas properties, less accumulated depletion&#13;and related deferred taxes exceed the sum of the discounted future net revenues of proved oil and natural gas reserves, the lower&#13;of cost or estimated fair value of unproved properties subject to amortization, the cost of properties not being amortized, and&#13;the related tax amounts, such excess capitalized costs are charged to expense.&lt;/p&gt;</us-gaap:OilAndGasPropertiesTextBlock>
    <us-gaap:CommitmentsAndContingenciesDisclosureTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE E: CONTINGENCIES&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;&lt;u&gt;Carlton Litigation&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;Since December 2006, Carlton Energy Group, LLC (&amp;#8220;Carlton&amp;#8221;),&#13;an individual, Eurenergy Resources Corporation (&amp;#8220;Eurenergy&amp;#8221;) and several other entities, including New Concept Energy,&#13;Inc., which was then known as CabelTel International Corporation (the &amp;#8220;Company&amp;#8221;), have been involved in contentious&#13;litigation alleging tortuous conduct, breach of contract and other matters and, as to the Company, that it was the alter ego of&#13;Eurenergy. The Carlton claims were based upon an alleged tortuous interference with&lt;/p&gt;&#13;&#13;&#13;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;a contract by the individual and Eurenergy related to the right to&#13;explore a coal bed methane concession in Bulgaria which had never (and has not to this day) produced any hydrocarbons. At no time&#13;during the pendency of this project or since did the Company or any of its officers or directors have any interest whatsoever in&#13;the success or failure of the so-called &amp;#8220;Bulgaria Project.&amp;#8221; However, in the litigation Carlton alleged that the Company&#13;was the alter ego of certain of the other defendants, including Eurenergy.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;Following a jury trial in 2009, the Trial Court (295&lt;sup&gt;th&lt;/sup&gt; District&#13;Court of Harris County, Texas) cross appeals were filed by Carlton, the individual and Eurenergy to the Court of Appeals for the&#13;First District of Texas (the &amp;#8220;Court of Appeals&amp;#8221;), which, in February 2012, rendered an opinion. The Company and the&#13;other defendants filed a Petition for Review of the Court of Appeals&amp;#8217; Opinion with the Supreme Court of the State of Texas.&#13;On May 8, 2015, the Supreme Court of Texas affirmed, in part, and reversed, in part, the Court of Appeals&amp;#8217; judgment, remanding&#13;the case to the Court of Appeals for further proceedings. On remand, the Court of Appeals reinstated a verdict on damages in the&#13;amount of $31.16 million against the individual and Eurenergy.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/115% New times roman,serif; margin: 0"&gt;During August 2017, the parties to the litigation reached an arrangement,&#13;the final terms of which will not be determined until the outcome of another appeal to the Supreme Court. Under the terms of the&#13;arrangement, the Company should have no financial responsibility to Carlton, nor should any potential final outcome materially&#13;adversely affect the Company, in management&amp;#8217;s opinion.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;u&gt;Other&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company has been named as a defendant&#13;in other lawsuits in the ordinary course of business. Management is of the opinion that these lawsuits will not have&#13;a material effect on the financial condition, results of operations or cash flows of the Company.&lt;/p&gt;</us-gaap:CommitmentsAndContingenciesDisclosureTextBlock>
    <us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE F: NEWLY ISSUED ACCOUNTING STANDARDS&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal New times roman,serif; margin: 0"&gt;We have considered all other newly issued accounting guidance that&#13;is applicable to our operations and the preparation of our financial statements including that which we have not yet adopted. We&#13;do not believe that any such guidance will have a material effect on our financial position or results of operations&lt;/p&gt;</us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock>
    <us-gaap:SubsequentEventsTextBlock contextRef="From2018-01-01to2018-09-30">&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&lt;b&gt;NOTE G: SUBSEQUENT EVENTS&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"&gt;The Company has evaluated subsequent events through November&#13;14, 2018, the date the financial statements were available to be issued, and determined that there are none to be reported.&lt;/p&gt;</us-gaap:SubsequentEventsTextBlock>
    <dei:EntityRegistrantName contextRef="From2018-07-01to2018-09-30">New Concept Energy, Inc.</dei:EntityRegistrantName>
    <dei:EntityCentralIndexKey contextRef="From2018-07-01to2018-09-30">0000105744</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="From2018-07-01to2018-09-30">10-Q</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="From2018-07-01to2018-09-30">2018-09-30</dei:DocumentPeriodEndDate>
    <dei:AmendmentFlag contextRef="From2018-07-01to2018-09-30">false</dei:AmendmentFlag>
    <dei:CurrentFiscalYearEndDate contextRef="From2018-07-01to2018-09-30">--12-31</dei:CurrentFiscalYearEndDate>
    <dei:EntityWellKnownSeasonedIssuer contextRef="From2018-07-01to2018-09-30">No</dei:EntityWellKnownSeasonedIssuer>
    <dei:EntityVoluntaryFilers contextRef="From2018-07-01to2018-09-30">No</dei:EntityVoluntaryFilers>
    <dei:EntityCurrentReportingStatus contextRef="From2018-07-01to2018-09-30">Yes</dei:EntityCurrentReportingStatus>
    <dei:EntityFilerCategory contextRef="From2018-07-01to2018-09-30">Smaller Reporting Company</dei:EntityFilerCategory>
    <dei:DocumentFiscalPeriodFocus contextRef="From2018-07-01to2018-09-30">Q3</dei:DocumentFiscalPeriodFocus>
    <dei:DocumentFiscalYearFocus contextRef="From2018-07-01to2018-09-30">2018</dei:DocumentFiscalYearFocus>
</xbrli:xbrl>
