XML 41 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
 3 Months Ended 3 Months Ended
Mar. 31, 2014
May 01, 2014
Common Class A [Member]
May 01, 2014
Common Class B [Member]
Mar. 31, 2014
LAMAR MEDIA CORP [Member]
May 01, 2014
LAMAR MEDIA CORP [Member]
Class Units [Member]
Document Information [Line Items]          
Document Type 10-Q     10-Q  
Amendment Flag false     false  
Document Period End Date Mar. 31, 2014     Mar. 31, 2014  
Document Fiscal Year Focus 2014     2014  
Document Fiscal Period Focus Q1     Q1  
Trading Symbol LAMR        
Entity Registrant Name LAMAR ADVERTISING CO/NEW     LAMAR MEDIA CORP/DE  
Entity Central Index Key 0001090425     0000899045  
Current Fiscal Year End Date --12-31     --12-31  
Entity Filer Category Large Accelerated Filer     Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   80,530,712 14,610,365   100