v3.26.1
Cover - USD ($)
12 Months Ended
Mar. 31, 2026
Jun. 29, 2026
Sep. 30, 2025
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description This Amendment No. 1 on Form 10-K/A (this “Amended Report”) amends the Annual Report on Form 10-K for Mexco Energy Corporation (the “Company”) for the year ended March 31, 2026, originally filed on June 29, 2026 (the “Original Report”). We are filing this Amended Report for the sole purpose of filing the information required by Part III of Form 10-K. We previously omitted this information from the Original Report in reliance on General Instruction G(3) to Form 10-K, which permits this information to be incorporated by reference from a registrant’s definitive proxy statement if the proxy statement is filed within 120 days after fiscal year-end. Due to an administrative error, our definitive proxy statement containing such information was not filed within 120 days after the end of our fiscal year, and we are therefore filing this Amended Report to include the Part III information directly.  The reference on the cover page of the Original Report to such incorporation by reference has been deleted, and this Amended Report amends and restates in their entirety the cover page and Part III of the Original Report.   Capitalized terms not otherwise defined in Part III of this Amended Report shall have the same meanings assigned to those terms in Parts I and II of the Original Report.   Pursuant to the rules of the U.S. Securities and Exchange Commission (the “SEC”), Part IV, Item 15 (Exhibit Index) has also been amended to contain the currently dated certifications from our principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. The certifications of our principal executive officer and of our principal financial officer are attached to this Amended Report as Exhibits 31.1 and 31.2, respectively. Because no financial statements have been included in this Amended Report and this Amended Report does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, we have omitted paragraphs 3, 4 and 5 of the certifications filed with this Amended Report. Additionally, we are not including the certifications under Section 906 of the Sarbanes-Oxley Act of 2002, because we are not filing any financial statements with this Amended Report.   The remainder of the Original Report remains the same as previously reported in the Original Report, and there are no other changes to the Company’s financial statements or disclosures and there are no changes to the Company’s reported results. This Amended Report does not reflect any subsequent events occurring after the filing date of the Original Report and does not modify or update in any way the disclosures made in the Original Report except as described above. Accordingly, this Amended Report should be read in conjunction with the Original Report and with our filings with the SEC after the Original Report.      
Document Annual Report true    
Document Transition Report false    
Document Period End Date Mar. 31, 2026    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2026    
Current Fiscal Year End Date --03-31    
Entity File Number 1-31785    
Entity Registrant Name MEXCO ENERGY CORPORATION    
Entity Central Index Key 0000066418    
Entity Tax Identification Number 84-0627918    
Entity Incorporation, State or Country Code CO    
Entity Address, Address Line One 415 W. Wall    
Entity Address, Address Line Two Suite 475    
Entity Address, City or Town Midland    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 79701    
City Area Code (432)    
Local Phone Number 682-1119    
Title of 12(b) Security Common Stock, par value $0.50 per share    
Trading Symbol MXC    
Security Exchange Name NYSEAMER    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 9,540,503
Entity Common Stock, Shares Outstanding   2,046,000  
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false