Concentration of Credit Risk	12 Months Ended
Dec. 31, 2021
Concentration of Credit Risk [Abstract]
Concentration of Credit Risk	18.CONCENTRATION OF CREDIT RISKThe 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 2021 2020 2019 T-Mobile (1) 36.2% 34.5% 35.1%AT&T Wireless 22.2% 24.1% 23.8%Verizon Wireless 14.7% 14.1% 14.0%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020. 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 2021 2020 2019 T-Mobile (1) 40.2% 40.5% 40.6%AT&T Wireless 30.5% 32.2% 32.1%Verizon Wireless 19.8% 18.5% 18.6% For the year ended December 31, Percentage of International Site Leasing Revenue 2021 2020 2019 Oi S.A. 28.3% 28.7% 31.3%Telefonica 16.3% 18.1% 26.9%Claro 13.7% 14.5% 11.6%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020. For the year ended December 31, Percentage of Site Development Revenue 2021 2020 2019 T-Mobile (1) 78.2% 66.8% 67.5%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020.Five customers comprised 65.5% and 63.8% of total gross accounts receivable at December 31, 2021 and December 31, 2020, respectively.

Concentration of Credit Risk

12 Months Ended

Dec. 31, 2021

Concentration of Credit Risk [Abstract]

18.CONCENTRATION OF CREDIT RISKThe 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 2021 2020 2019 T-Mobile (1) 36.2% 34.5% 35.1%AT&T Wireless 22.2% 24.1% 23.8%Verizon Wireless 14.7% 14.1% 14.0%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020. 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 2021 2020 2019 T-Mobile (1) 40.2% 40.5% 40.6%AT&T Wireless 30.5% 32.2% 32.1%Verizon Wireless 19.8% 18.5% 18.6% For the year ended December 31, Percentage of International Site Leasing Revenue 2021 2020 2019 Oi S.A. 28.3% 28.7% 31.3%Telefonica 16.3% 18.1% 26.9%Claro 13.7% 14.5% 11.6%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020. For the year ended December 31, Percentage of Site Development Revenue 2021 2020 2019 T-Mobile (1) 78.2% 66.8% 67.5%(1)Amounts have been adjusted to reflect the merger of T-Mobile and Sprint on April 1, 2020.Five customers comprised 65.5% and 63.8% of total gross accounts receivable at December 31, 2021 and December 31, 2020, respectively.