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Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	Jul. 30, 2012	Jul. 02, 2012	Jun. 30, 2012	Dec. 31, 2011
Subsequent events (Textual) [Abstract]
Total purchase price for acquiring outdoor advertising assets		$ 38,512
Redemption price of senior subordinated note	122,760		2,189,714	2,158,528
Interest rate on senior notes	6.625%
Percentage of principal amount outstanding which is equal to redemption price	101.104%
Senior subordinated notes remaining outstanding following redemption	$ 137,217

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Senior subordinated notes redemption percentage.

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The amount of senior subordinated notes remaining outstanding following the redemption.

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Amount of cash paid to acquire the entity.

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Interest rate stated in the contractual debt agreement.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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