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Note 8 - Basic and Diluted Net Loss Per Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2018 |  |  | 2017 |
Net loss attributable to Avalon Holdings Corporation common shareholders |  | $ | (1,144 | ) |  | $ | (307 | )
Shares used in computing basic loss per share |  |  | 3,814 |  |  |  | 3,803 |
Potentially dilutive shares from stock options |  |  | - |  |  |  | - |
Shares used in computing diluted loss per share |  |  | 3,814 |  |  |  | 3,803 |
Loss per share attributable to Avalon Holdings Corporation common shareholders |  |  |  |  |  |  |  |
Basic and diluted net loss per share |  | $ | (0.30 | ) |  | $ | (0.08 | )

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