Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Allowance for doubtful accounts	$ 8,700,000	$ 8,100,000
Accumulated amortization	24,418,000	20,221,000
Stockholders' equity:
Shares held in treasury	17,082,652	16,998,850
LAMAR MEDIA CORP
Current assets:
Allowance for doubtful accounts	8,700,000	8,100,000
Accumulated amortization	15,130,000	10,933,000
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000	3,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100
Common Class A
Stockholders' equity:
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	94,858,506	94,483,412
Common stock, shares outstanding	77,775,854	77,484,562
Common Class B
Stockholders' equity:
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	37,500,000	37,500,000
Common stock, shares issued	15,122,865	15,122,865
Common stock, shares outstanding	15,122,865	15,122,865
Preferred Class A
Stockholders' equity:
Preferred stock, par value	$ 638	$ 638
Preferred stock, cumulative dividends	63.80	63.80
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Series AA Preferred Stock
Stockholders' equity:
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, cumulative dividends	$ 63.80	$ 63.80
Preferred stock, shares authorized	5,720	5,720
Preferred stock, shares issued	5,720	5,720
Preferred stock, shares outstanding	5,720	5,720