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Summarized Financial Information of Subsidiaries (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Summarized Financial Information of Subsidiaries (Textuals) [Abstract]
Balance of permitted transfers to Parent Company	$ 1,492,120	$ 1,380,705
Description of provisions on senior credit facility transfers to Lamar Advertising subject to additional restrictions	the total holdings debt ratio is greater than 5.75 to 1 or its senior debt ratio is greater than 3.25 to 1.0, or if under the indenture for the 9 3/4% senior notes Lamar Media’s senior leverage ratio is greater than or equal to 3.0 to 1
Description of actual position on senior credit facility transfers to Lamar Advertising not subject to additional restrictions	(i) the total holdings debt ratio was less than 5.75 to 1 (ii) the senior debt ratio was less than 3.25 to 1 and (iii) the senior leverage ratio was less than 3.0 to 1 related our senior credit facility or the 9 3/4% senior notes

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- Definition

Amount of permitted transfers by the wholly owned subsidiary to its parent company during the period. Transfers may be in the form of cash dividends, loans or advances and are limited under the terms of the wholly owned subsidiary's outstanding subordinated notes.

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Description of Position on senior credit facility transfers to Parent Company not subject to additional restrictions.

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Description of Provisions On senior credit facility transfers to Parent Company subject to additional restrictions.

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Summarized financial information of subsidiaries.

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