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Note 9 - Basic and Diluted Net Income (Loss) Per Share | 3 Months Ended
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Mar. 31, 2021
Notes to Financial Statements |
Earnings Per Share [Text Block] | Note 9. Basic and Diluted Net Income (Loss) per Share Basic net income (loss) per share attributable to Avalon Holdings Corporation common shareholders is computed by dividing the net income (loss) by the weighted average number of common shares outstanding. For the three months ended March 31, 2021 and 2020, the weighted average number of common shares outstanding was 3,899,431 and 3,875,431, respectively. Diluted net income (loss) per share attributable to Avalon Holdings Corporation common shareholders is computed by dividing net income (loss) by the weighted average number of common shares outstanding plus any weighted common equivalent shares determined to be outstanding during the period using the treasury method. The weighted common equivalent shares included in the calculation are related to stock options granted by Avalon where the weighted average market price of Avalon's common stock for the period presented is greater than the option exercise price of the stock option. For the three months ended March 31, 2021, the diluted weighted average number of shares outstanding was 3,944,825. For the three months ended March 31, 2020, the diluted per share amount is equal to the basic per share amount because the average market price of Avalon's common shares during the period was less than the exercise price of the stock options outstanding.

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