| Document and Entity Information - USD ($) | 12 Months Ended | ||
| Dec. 31, 2022 | Apr. 24, 2023 | Oct. 07, 2022 | |
| Document Information [Line Items] | |||
| Entity Registrant Name | M-tron Industries, Inc. | ||
| Entity Central Index Key | 0001902314 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Current Reporting Status | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Public Float | $ 25,815,984 | ||
| Entity Common Stock, Shares Outstanding | 2,721,000 | ||
| Document Fiscal Year Focus | 2022 | ||
| Document Fiscal Period Focus | FY | ||
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Document Period End Date | Dec. 31, 2022 | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | true | ||
| Entity Ex Transition Period | false | ||
| Entity Shell Company | false | ||
| Entity File Number | 001-041391 | ||
| Entity Tax Identification Number | 46-0457944 | ||
| Entity Address, Address Line One | 2525 Shader Road | ||
| Entity Address, City or Town | Orlando | ||
| Entity Address, State or Province | FL | ||
| Entity Address, Postal Zip Code | 32804 | ||
| City Area Code | 407 | ||
| Local Phone Number | 298-2000 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Entity Interactive Data Current | Yes | ||
| ICFR Auditor Attestation Flag | false | ||
| Entity Voluntary Filers | No | ||
| Auditor Firm ID | 127 | ||
| Auditor Name | PKF O'Connor Davies, LLP | ||
| Auditor Location | New York, New York | ||
| Amendment Description | This Amendment No. 1 (this “Amendment”) on Form 10-K/A is filed with respect to M-tron Industries, Inc.’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the “Form 10-K”), filed with the Securities and Exchange Commission (the “SEC”) on March 30, 2023. This Amendment updates the Form 10-K, which omitted certain information required by Part III (Items 10, 11, 12, 13 and 14) in reliance on General Instruction G(3) to Form 10-K, which provides that such information may be either incorporated by reference from the registrant’s definitive proxy statement or included in an amendment to Form 10-K, in either case filed with the SEC not later than 120 days after the end of the fiscal year. Since we intend to file our definitive proxy statement for our 2023 annual meeting of stockholders later this year, the timing of the filing of such definitive proxy statement will be outside this window for incorporation by reference. Accordingly, this Amendment is being filed solely to (i) amend Part III (Items 10, 11, 12, 13 and 14) of the Form 10-K to include the information required by such Items that was not included in the Form 10-K filed with the SEC on March 30, 2023, (ii) delete the reference on the cover of the Form 10-K to the incorporation by reference of portions of our definitive proxy statement into Part III of the Form 10-K, and (iii) file new certifications of our principal executive officer and principal financial officer as exhibits to this Amendment under Item 15 of Part IV hereof, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). No financial statements are included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K; accordingly, paragraphs 3, 4 and 5 of the certifications have been omitted. Similarly, because no financial statements have been included in this Amendment, certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 have been omitted. This Amendment makes no changes to the Form 10-K except for those described above. This Amendment does not amend, update, or change the financial statements or any other items or disclosures contained in the Form 10-K and does not otherwise reflect events occurring after the original date of the Form 10-K; accordingly, this Amendment should be read in conjunction with our filings with the SEC subsequent to the filing of the Form 10-K. Unless indicated otherwise, throughout this Amendment, references to the "Company," "MtronPTI," "we," "us," or "our" mean M-tron Industries, Inc. and its subsidiaries, and references to “LGL” and “LGL Group” mean The LGL Group, Inc., the Company’s former parent. | ||
| Common Stock [Member] | |||
| Document Information [Line Items] | |||
| Trading Symbol | MPTI | ||
| Title of 12(b) Security | Common Stock, $0.01 par value | ||
| Security Exchange Name | NYSEAMER |
