Earnings Per Share	9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	15.EARNINGS PER SHAREBasic earnings per share was computed by dividing net income (loss) attributable to SBA Communications Corporation by the weighted-average number of shares of Common Stock outstanding for each respective period. Diluted earnings per share was calculated by dividing net income (loss) attributable to SBA Communications Corporation by the weighted-average number of shares of Common Stock outstanding adjusted for any dilutive Common Stock equivalents, including unvested RSUs, PSUs, and shares issuable upon exercise of stock options as determined under the “Treasury Stock” method. ‎ The following table sets forth basic and diluted net income (loss) per common share attributable to common shareholders for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data): For the three months For the nine months ended September 30, ended September 30, 2021 2020 2021 2020Numerator: Net income (loss) attributable to SBA Communications Corporation $ 47,798 $ 22,568 $ 188,720 $ (81,678)Denominator: Basic weighted-average shares outstanding 109,577 111,783 109,487 111,809Dilutive impact of stock options, RSUs, and PSUs 1,988 1,920 1,842 —Diluted weighted-average shares outstanding 111,565 113,703 111,329 111,809Net income (loss) per common share attributable to SBA Communications Corporation: Basic $ 0.44 $ 0.20 $ 1.72 $ (0.73)Diluted $ 0.43 $ 0.20 $ 1.70 $ (0.73) For the three months ended September 30, 2021 and 2020 and for the nine months ended September 30, 2021, the diluted weighted average number of common shares outstanding excluded an immaterial number of shares issuable upon exercise of the Company’s stock options because the impact would be anti-dilutive.For the nine months ended September 30, 2020, all potential common stock equivalents, including 3.2 million shares underlying stock options outstanding, 0.3 million shares underlying RSUs outstanding, and 0.1 million shares underlying PSUs outstanding, were excluded as the effect would be anti-dilutive.

Earnings Per Share

9 Months Ended

Sep. 30, 2021

15.EARNINGS PER SHAREBasic earnings per share was computed by dividing net income (loss) attributable to SBA Communications Corporation by the weighted-average number of shares of Common Stock outstanding for each respective period. Diluted earnings per share was calculated by dividing net income (loss) attributable to SBA Communications Corporation by the weighted-average number of shares of Common Stock outstanding adjusted for any dilutive Common Stock equivalents, including unvested RSUs, PSUs, and shares issuable upon exercise of stock options as determined under the “Treasury Stock” method. ‎ The following table sets forth basic and diluted net income (loss) per common share attributable to common shareholders for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data): For the three months For the nine months ended September 30, ended September 30, 2021 2020 2021 2020Numerator: Net income (loss) attributable to SBA Communications Corporation $ 47,798 $ 22,568 $ 188,720 $ (81,678)Denominator: Basic weighted-average shares outstanding 109,577 111,783 109,487 111,809Dilutive impact of stock options, RSUs, and PSUs 1,988 1,920 1,842 —Diluted weighted-average shares outstanding 111,565 113,703 111,329 111,809Net income (loss) per common share attributable to SBA Communications Corporation: Basic $ 0.44 $ 0.20 $ 1.72 $ (0.73)Diluted $ 0.43 $ 0.20 $ 1.70 $ (0.73) For the three months ended September 30, 2021 and 2020 and for the nine months ended September 30, 2021, the diluted weighted average number of common shares outstanding excluded an immaterial number of shares issuable upon exercise of the Company’s stock options because the impact would be anti-dilutive.For the nine months ended September 30, 2020, all potential common stock equivalents, including 3.2 million shares underlying stock options outstanding, 0.3 million shares underlying RSUs outstanding, and 0.1 million shares underlying PSUs outstanding, were excluded as the effect would be anti-dilutive.