XML 37 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document and Entity Information Document
 3 Months Ended
Mar. 31, 2015
May 08, 2015
Entity Information [Line Items]    
Entity Registrant Name CORE MOLDING TECHNOLOGIES INC.  
Entity Central Index Key 0001026655  
Document Type 10-Q  
Document Period End Date Mar. 31, 2015  
Amendment Flag false  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   7,666,080dei_EntityCommonStockSharesOutstanding