Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Schedule II Valuation and Qualifying Accounts

Schedule II - Valuation and Qualifying Accounts Disclosure [Text Block]

			Additions				Deductions
	Balance at Beginning of Year		Charged to Operations		Acquired		Credited to Operations			Written Off			Effect of Exchange Rate Changes		Balance at End of Year
Allowance for Doubtful Accounts Receivable:
2011	$	5,683	$	1,819	$	—	$	—		$	(1,611	)	$	—	$	5,891
2010	$	5,497	$	1,829	$	—	$	—		$	(1,669	)	$	26	$	5,683
2009	$	6,267	$	998	$	—	$	—		$	(1,802	)	$	34	$	5,497
			Additions				Deductions
	Balance at Beginning of Year		Charged to Operations		Acquired		Credited to Operations			Written Off			Effect of Exchange Rate Changes		Balance at End of Year
Allowance for Deferred Site Rental Receivables:
2011	$	5,080	$	—	$	—	$	(5,080	)	$	—		$	—	$	—
2010	$	3,600	$	7,200	$	—	$	(5,720	)	$	—		$	—	$	5,080
2009	$	—	$	3,600	$	—	$	—		$	—		$	—	$	3,600
			Additions				Deductions
	Balance at Beginning of Year		Charged to Operations		Charged to Additional Paid-in Capital and Other Comprehensive Income		Credited to Operations			Credited to Additional Paid-in Capital and Other Comprehensive Income			Other Adjustments(a)		Balance at End of Year
Deferred Tax Valuation Allowance:
2011	$	318,055	$	—	$	—	$	(83,115	)	$	(22,119	)	$	15,596	$	228,417
2010	$	190,848	$	76,125	$	38,646	$	—		$	—		$	12,436	$	318,055
2009	$	256,325	$	—	$	—	$	(32,761	)	$	(45,657	)	$	12,941	$	190,848

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(a) Inclusive of the effects of exchange rate changes.