Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Revenues:
Site leasing		$ 430,542	$ 397,550
Site development		27,760	25,813
Total revenues		458,302	423,363
Cost of revenues (exclusive of depreciation, accretion, and amortization shown below):
Cost of site leasing		92,817	89,382
Cost of site development		22,520	21,588
Selling, general, and administrative	[1]	36,049	34,223
Acquisition related adjustments and expenses		3,044	2,969
Asset impairment and decommission costs		8,506	8,351
Depreciation, accretion, and amortization		165,398	159,031
Total operating expenses		328,334	315,544
Operating income		129,968	107,819
Other income (expense):
Interest income		1,295	3,234
Interest expense		(88,923)	(77,602)
Non-cash interest expense		(733)	(705)
Amortization of deferred financing fees		(5,388)	(6,698)
Loss from extinguishment of debt, net		(645)
Other income, net		4,553	14,948
Total other expense		(89,841)	(66,823)
Income before provision for income taxes		40,127	40,996
Provision for income taxes		(8,582)	(3,398)
Net income		$ 31,545	$ 37,598
Net income per common share:
Basic		$ 0.27	$ 0.31
Diluted		$ 0.27	$ 0.31
Weighted average number of common shares
Basic		116,494	121,049
Diluted		118,293	121,734

[1] Includes non-cash compensation of $9,893 and $8,826 for the three months ended March 31, 2018 and 2017, respectively.