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v3.20.2

Net Income Per Share (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Numerator (basic and diluted): |  |  |  |
Net income | $ 24.5 | $ 27.7 | $ 68.5 | $ 65.6
Less: Dividends paid to participating securities | (0.1) | 0.0 | (0.5) | (0.2)
Less: Undistributed earnings available to participating securities | (0.2) | (0.1) | (0.4) | (0.2)
Undistributed and distributed earnings available to common stockholders | $ 24.2 | $ 27.6 | $ 67.6 | $ 65.2
Denominator: |  |  |  |
Average number of common shares outstanding (in shares) | 30,909,700 | 30,662,800 | 30,805,300 | 30,648,400
Effect of dilutive stock-based compensation (in shares) | 232,800 | 169,100 | 214,800 | 156,300
Average number of common and potential common shares outstanding (in shares) | 31,142,500 | 30,831,900 | 31,020,100 | 30,804,700

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