Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2012

Intangible Assets [Abstract]

Amortization of below-market tenant leases [Table Text Block]

The estimated annual amounts related to below-market tenant leases expected to be amortized into site rental revenues for the six months ended December 31, 2012 and years ended December 31, 2013 to 2016 are as follows:

	Six Months Ended December 31,		Years Ending December 31,
	2012		2013		2014		2015		2016
Estimated annual amortization	$	13,203	$	26,398	$	26,361	$	25,527	$	24,799

Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]

The following is a summary of the Company's intangible assets.

	As of June 30, 2012							As of December 31, 2011
	Gross Carrying Value		Accumulated Amortization			Net Book Value		Gross Carrying Value		Accumulated Amortization			Net Book Value
Site rental contracts and customer relationships	$	3,091,480	$	(825,535	)	$	2,265,945	$	2,823,832	$	(748,850	)	$	2,074,982
Other intangible assets	181,435		(56,088		)	125,347		152,375		(49,175		)	103,200
Total	$	3,272,915	$	(881,623	)	$	2,391,292	$	2,976,207	$	(798,025	)	$	2,178,182

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The components of the additions to intangible assets during the six months ended June 30, 2012 are as follows:

	Three Months Ended June 30,			Six Months Ended June 30,
	2012			2012
	Amount		Weighted-Average Amortization Period	Amount(a)		Weighted-Average Amortization Period
			(In years)			(In years)
Site rental contracts and customer relationships	$	162,062	19.6	$	267,564	23.5
Other intangible assets	30,000		19.0	30,573		18.9
Total	$	192,062	19.5	$	298,137	23.0

________________

(a) $94.5 million related to the WCP Acquisition.

A

Schedule of Amortization Expense [Text Block]

Amortization expense related to intangible assets is classified as follows on the Company's consolidated statement of operations and comprehensive income (loss):

	Three Months Ended June 30,				Six Months Ended June 30,
Classification	2012		2011		2012		2011
Depreciation, amortization and accretion	$	42,353	$	39,663	$	82,525	$	79,234
Site rental costs of operations	755		875		1,563		1,995
Total amortization expense	$	43,108	$	40,538	$	84,088	$	81,229

Schedule of Expected Amortization Expense [Table Text Block]

The estimated annual amortization expense related to intangible assets (inclusive of those recorded to "site rental costs of operations") for the six months ended December 31, 2012 and years ended December 31, 2013 to 2016 is as follows:

	Six Months Ended December 31,		Years Ending December 31,
	2012		2013		2014		2015		2016
Estimated annual amortization	$	87,277	$	166,400	$	164,128	$	155,247	$	155,247