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Supplementary Financial Information to Item 8. (Tables) | 12 Months Ended
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Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Data |
2020 |  | Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
Net sales |  | $ | 3,746 |  |  | $ | 5,964 |  |  | $ | 3,335 |  |  | $ | 3,783 |
Gross profit |  | 1,434 |  |  | 1,376 |  |  | 1,343 |  |  | 1,032 |
Net income (loss) |  | 65 |  |  | (1,165) |  |  | (4,340) |  |  | (541) |
Net income (loss) per common share attributable to common stockholders - basic 1: |  | $ | 0.01 |  |  | $ | (0.35) |  |  | $ | (1.36) |  |  | $ | (0.18) |
Net income (loss) per common share attributable to common stockholders - diluted 1: |  | $ | 0.01 |  |  | $ | (0.35) |  |  | $ | (1.36) |  |  | $ | (0.18) |
Weighted average shares used in computing net income (loss) per common share 2: |  |  |  |  |  |  |  |
Basic |  | 3,491 |  |  | 3,308 |  |  | 3,192 |  |  | 3,086 |
Diluted |  | 4,307 |  |  | 3,308 |  |  | 3,192 |  |  | 3,086 |
2019 |  | Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
Net sales |  | $ | 3,531 |  |  | $ | 2,915 |  |  | $ | 3,082 |  |  | $ | 3,177 |
Gross profit |  | 957 |  |  | 1,028 |  |  | (109) |  |  | 98 |
Net loss |  | (1,308) |  |  | (946) |  |  | (2,254) |  |  | (2,865) |
Net loss per common share (basic and diluted)1 |  | $ | (0.53) |  |  | $ | (0.38) |  |  | $ | (0.91) |  |  | $ | (1.18) |
Shares outstanding (basic and diluted)2 |  | 2,480 |  |  | 2,474 |  |  | 2,467 |  |  | 2,425 |

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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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