Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Revenues:
Site leasing		$ 397,550	$ 374,450
Site development		25,813	25,319
Total revenues		423,363	399,769
Cost of revenues (exclusive of depreciation, accretion, and amortization shown below):
Cost of site leasing		89,382	82,762
Cost of site development		21,588	19,833
Selling, general, and administrative	[1]	34,223	30,406
Acquisition related adjustments and expenses		2,969	3,182
Asset impairment and decommission costs		8,351	6,183
Depreciation, accretion, and amortization		159,031	159,801
Total operating expenses		315,544	302,167
Operating income		107,819	97,602
Other income (expense):
Interest income		3,234	1,866
Interest expense		(77,602)	(83,804)
Non-cash interest expense		(705)	(455)
Amortization of deferred financing fees		(6,698)	(5,265)
Other income (expense), net		14,948	45,900
Total other expense, net		(66,823)	(41,758)
Income before provision for income taxes		40,996	55,844
Provision for income taxes		(3,398)	(2,205)
Net income		$ 37,598	$ 53,639
Net income per common share
Basic		$ 0.31	$ 0.43
Diluted		$ 0.31	$ 0.43
Weighted average common shares
Basic		121,049	125,398
Diluted		121,734	126,124

[1] Includes non-cash compensation of $8,826 and $7,686 for the three months ended March 31, 2017 and 2016, respectively.