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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | The following table sets forth unaudited financial data for each of the Company’s last eight fiscal quarters.
|  | Year Ended December 31, 2017 |  |  | Year Ended December 31, 2016 |
|  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |  |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
|  | (Dollars in thousands, except per share data) |
Income Statement Data: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 713 |  |  | $ | 951 |  |  | $ | 967 |  |  | $ | 967 |  |  | $ | 951 |  |  | $ | 940 |  |  | $ | 1,214 |  |  | $ | 734 |
Gross profit |  |  | 603 |  |  |  | 747 |  |  |  | 862 |  |  |  | 864 |  |  |  | 788 |  |  |  | 749 |  |  |  | 946 |  |  |  | 587 |
Loss from operations |  |  | (940 | ) |  |  | (1,101 | ) |  |  | (1,083 | ) |  |  | (2,957 | ) |  |  | (2,149 | ) |  |  | (1,779 | ) |  |  | (730 | ) |  |  | (1,092 | )
Net loss |  |  | (937 | ) |  |  | (1,099 | ) |  |  | (1,075 | ) |  |  | (2,910 | ) |  |  | (2,143 | ) |  |  | (1,775 | ) |  |  | (727 | ) |  |  | (1,090 | )
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.09 | ) |  | $ | (0.10 | ) |  | $ | (0.08 | ) |  | $ | (0.19 | ) |  | $ | (0.22 | ) |  | $ | (0.19 | ) |  | $ | (0.07 | ) |  | $ | (0.10 | )
Diluted |  | $ | (0.09 | ) |  | $ | (0.10 | ) |  | $ | (0.08 | ) |  | $ | (0.19 | ) |  | $ | (0.22 | ) |  | $ | (0.19 | ) |  | $ | (0.07 | ) |  | $ | (0.10 | )

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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