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Concentration Of Credit Risk
 12 Months Ended
Dec. 31, 2016
Concentration Of Credit Risk [Abstract]  
Concentration of Credit Risk

10.CONCENTRATION OF CREDIT RISK

The Company’s credit risks consist primarily of accounts receivable with national, regional, and local wireless service providers and federal and state government agencies. The Company performs periodic credit evaluations of its customers’ financial condition and provides allowances for doubtful accounts, as required, based upon factors surrounding the credit risk of specific customers, historical trends, and other information. The Company generally does not require collateral.

The following is a list of significant customers (representing at least 10% of revenue for any period reported) and the percentage of total revenue for the specified time periods derived from such customers:





 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



 

 

 

For the year ended December 31,

Percentage of Total Revenues

 

 

 

2016

 

2015

 

2014



 

 

 

 

 

 

 

 

AT&T Wireless (1)

 

 

 

 25.7% 

 

 24.2% 

 

 23.0% 

T-Mobile

 

 

 

 17.0% 

 

 16.0% 

 

 15.5% 

Sprint

 

 

 

 16.1% 

 

 19.6% 

 

 23.4% 

Verizon Wireless

 

 

 

 15.2% 

 

 13.8% 

 

 12.0% 



The Company’s site leasing and site development segments derive revenue from these customers. Client percentages of total revenue in each of the segments are as follows:



 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



 

 

 

For the year ended December 31,

Percentage of Domestic Site Leasing Revenue

 

 

 

2016

 

2015

 

2014



 

 

 

 

 

 

 

 

AT&T Wireless (1)

 

 

 

 32.7% 

 

 31.9% 

 

 30.1% 

Sprint

 

 

 

 19.8% 

 

 22.3% 

 

 25.6% 

T-Mobile

 

 

 

 19.6% 

 

 19.0% 

 

 19.2% 

Verizon Wireless

 

 

 

 18.2% 

 

 16.3% 

 

 14.4% 



 

 

 

 

 

 

 

 



 

 

 

For the year ended December 31,

Percentage of International Site Leasing Revenue

 

 

 

2016

 

2015

 

2014



 

 

 

 

 

 

 

 

Oi S.A.

 

 

 

 43.9% 

 

 48.8% 

 

 44.3% 

Telefonica

 

 

 

 26.4% 

 

 24.7% 

 

 28.8% 





 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



 

 

 

For the year ended December 31,

Percentage of Site Development Revenue

 

 

 

2016

 

2015

 

2014



 

 

 

 

 

 

 

 

T-Mobile

 

 

 

 28.4% 

 

 17.6% 

 

 8.5% 

Verizon Wireless

 

 

 

 16.5% 

 

 14.8% 

 

 10.1% 

Sprint

 

 

 

 11.7% 

 

 28.5% 

 

 36.7% 

Ericsson, Inc.

 

 

 

 5.0% 

 

 15.3% 

 

 16.8% 



(1)Prior year amounts have been adjusted to reflect the merger of AT&T Wireless and Leap Wireless (Cricket Wireless).

Five significant customers comprised 59.3% of total gross accounts receivable at December 31, 2016 compared to five significant customers which comprised 62.1% of total gross accounts receivable at December 31, 2015.