Concentration of Credit Risk

12 Months Ended

Dec. 31, 2023

Concentration of Credit Risk [Abstract]

Concentration of Credit Risk

18.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.

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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	2023	2022	2021
T-Mobile	32.5%	36.4%	36.2%
AT&T Wireless	19.5%	19.6%	22.2%
Verizon Wireless	14.6%	14.5%	14.7%

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	2023	2022	2021
T-Mobile	40.2%	40.6%	40.2%
AT&T Wireless	28.6%	29.0%	30.5%
Verizon Wireless	19.7%	20.1%	19.8%
	For the year ended December 31,
Percentage of International Site Leasing Revenue	2023 (1)	2022 (1)	2021
Telefonica	22.5%	20.7%	16.3%
Claro	20.2%	19.0%	13.7%
TIM	15.7%	17.3%	7.2%
Oi S.A.	3.5%	3.9%	28.3%

(1)Amounts reflect the sale of Oi S.A.’s wireless assets to Telefonica, Claro, and TIM.

	For the year ended December 31,
Percentage of Site Development Revenue	2023	2022	2021
T-Mobile	71.5%	80.1%	78.2%
Verizon Wireless	16.8%	7.8%	3.3%

Five customers comprised 65.6% and 71.6% of total gross accounts receivable at December 31, 2023 and 2022, respectively.