XML 28 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
 3 Months Ended
Mar. 31, 2014
May 05, 2014
Class A Common Stock
May 05, 2014
Class B Common Stock
Entity Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Mar. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus Q1    
Trading Symbol CIX    
Entity Registrant Name COMPX INTERNATIONAL INC    
Entity Central Index Key 0001049606    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   2,397,107 10,000,000