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Per Share Data and Stockholders' Equity | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Per Share Data and Stockholders' Equity | Earnings Per Share – The calculation of diluted earnings per share considers the potential dilutive effect of restricted stock units, restricted stock awards and stock options granted under Sonic’s stock compensation plans (and any non-forfeitable dividends paid on such awards) To the extent that we report a net loss in any period presented, basic and diluted loss per share are the same as there is no dilutive effect of outstanding stock awards in a net loss position.

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