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Note 12 - Loss Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  |  | 2017 |  |  |  | 2018 |  |  |  | 2019 |
Income: |  |  |  |  |  |  |  |  |  |  |  |
Net loss, continuing operations |  |  | (6,944,261 | ) |  |  | (663,396 | ) |  |  | (1,682,671 | )
Dividends to Series B preferred shares |  |  | (1,808,811 | ) |  |  | (1,335,733 | ) |  |  | (1,271,782 | )
Preferred deemed dividend |  |  | - |  |  |  | - |  |  |  | (504,577 | )
Net loss attributable to common shareholders, continuing operations |  |  | (8,753,072 | ) |  |  | (1,999,129 | ) |  |  | (3,459,030 | )
Weighted average common shares –outstanding , basic and diluted |  |  | 1,383,440 |  |  |  | 1,414,775 |  |  |  | 2,861,928 |
Basic and diluted loss per share, continuing operations |  |  | (6.33 | ) |  |  | (1.41 | ) |  |  | (1.21 | )
Net income attributable to common shareholders, discontinued operations |  |  | 849,701 |  |  |  | 554,506 |  |  |  | - |
Net loss attributable to common shareholders |  |  | (7,903,371 | ) |  |  | (1,444,623 | ) |  |  | (3,459,030 | )
Basic and diluted loss per share |  |  | (5.72 | ) |  |  | (1.02 | ) |  |  | (1.21 | )

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