XML 42 R57.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Long-term Debt - Long-Term Debt (Parenthetical) (Detail) | Dec. 31, 2010 | Dec. 31, 2012 7 7/8% Senior Subordinated Notes [Member] | Apr. 22, 2010 7 7/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 6 5/8% Senior Subordinated Notes [Member] | Aug. 16, 2005 6 5/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 6 5/8% Senior Subordinated Notes - Series B [Member] | Aug. 17, 2006 6 5/8% Senior Subordinated Notes - Series B [Member] | Dec. 31, 2012 6 5/8% Senior Subordinated Notes - Series C [Member] | Oct. 11, 2007 6 5/8% Senior Subordinated Notes - Series C [Member] | Dec. 31, 2012 5 7/8% Senior Subordinated Notes [Member] | Feb. 09, 2012 5 7/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 5% Senior Subordinated Notes [Member] | Oct. 30, 2012 5% Senior Subordinated Notes [Member] | Dec. 31, 2012 9 3/4% Senior Notes [Member] | Dec. 31, 2011 9 3/4% Senior Notes [Member] | Mar. 27, 2009 9 3/4% Senior Notes [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 7 7/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 6 5/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 6 5/8% Senior Subordinated Notes - Series B [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 6 5/8% Senior Subordinated Notes - Series C [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 5 7/8% Senior Subordinated Notes [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 5% Senior Subordinated Notes [Member] | Dec. 31, 2012 LAMAR MEDIA CORP [Member] 9 3/4% Senior Notes [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on senior notes | 2.875% | 7.875% | 7.875% | 6.625% | 6.625% | 6.625% | 6.625% | 6.625% | 6.625% | 5.875% | 5.875% | 5.00% | 5.00% | 9.75% | 9.75% | 9.75% | 7.875% | 6.625% | 6.625% | 6.625% | 5.875% | 5.00% | 9.75%

X
- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration