XML 15 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Mar. 11, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-12505    
Entity Registrant Name CORE MOLDING TECHNOLOGIES, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 31-1481870    
Entity Address, Address Line One 800 Manor Park Drive    
Entity Address, City or Town Columbus    
Entity Address, State or Province OH    
Entity Address, Postal Zip Code 43228-0183    
City Area Code 614    
Local Phone Number 870-5000    
Title of 12(b) Security Common Stock, par value $0.01    
Trading Symbol CMT    
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 Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 138,325
Entity Common Stock, Shares Outstanding (in shares)   9,040,704  
Documents Incorporated by Reference ortions of the registrant's Definitive Proxy Statement, which will be filed with the Securities and Exchange Commission no later than 120 days after the end of the fiscal year covered by this report.    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2023    
Entity Central Index Key 0001026655    
Amendment Flag false    
Document Financial Statement Error Correction [Flag] false