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Note 17 - Quarterly Financial Summary (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Quarterly Financial Information [Table Text Block] |
2020 |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Revenues |  | $ | 48,634 |  |  | $ | 54,926 |  |  | $ | 54,614 |  |  | $ | 40,322 |
Gross profit |  |  | 6,172 |  |  |  | 5,417 |  |  |  | 3,738 |  |  |  | 2,674 |
Operating income (loss) |  |  | 1,680 |  |  |  | 1,035 |  |  |  | (475 | ) |  |  | (1,818 | )
Income (loss) from continuing operations, net of tax |  |  | 954 |  |  |  | 529 |  |  |  | (1,003 | ) |  |  | (1,967 | )
Net income (loss) |  |  | 954 |  |  |  | 529 |  |  |  | (1,003 | ) |  |  | (1,967 | )
Income (loss) from continuing operations per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )
Diluted |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )
Diluted |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )
2019 |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Revenues |  | $ | 41,660 |  |  | $ | 41,169 |  |  | $ | 46,138 |  |  | $ | 49,253 |
Gross (loss) profit |  |  | 3,537 |  |  |  | 3,892 |  |  |  | 3,994 |  |  |  | 3,989 |
Operating loss |  |  | (494 | ) |  |  | (206 | ) |  |  | (258 | ) |  |  | (1,399 | )
Loss from continuing operations, net of tax |  |  | (1,043 | ) |  |  | (1,018 | ) |  |  | (898 | ) |  |  | (1,627 | )
Net loss |  |  | (1,042 | ) |  |  | (1,018 | ) |  |  | (898 | ) |  |  | (1,565 | )
Loss from continuing operations per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.07 | ) |  | $ | (0.06 | ) |  | $ | (0.06 | ) |  | $ | (0.09 | )
Diluted |  | $ | (0.07 | ) |  | $ | (0.06 | ) |  | $ | (0.06 | ) |  | $ | (0.09 | )
Net loss per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.07 | ) |  | $ | (0.06 | ) |  | $ | (0.06 | ) |  | $ | (0.09 | )
Diluted |  | $ | (0.07 | ) |  | $ | (0.06 | ) |  | $ | (0.06 | ) |  | $ | (0.09 | )

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121640914&loc=d3e1280-108306 + Details
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