XML 93 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
 6 Months Ended
Jun. 30, 2013
Jul. 31, 2013
Class A Common Stock [Member]
Jul. 31, 2013
Class B Common Stock [Member]
Entity Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jun. 30, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q2    
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