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Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Summarized Quarterly Information | Summarized quarterly data for fiscal 2016 and 2015 are as follows (in thousands, except per share data):
|  | Year ended December 31, 2016 |
|  | 1st Quarter |  |  | 2nd Quarter |  |  | 3rd Quarter |  |  | 4th Quarter |
Selected quarterly financial data: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 7,214 |  |  | $ | 7,459 |  |  | $ | 6,478 |  |  | $ | 7,084 |
Gross profit |  | $ | 5,101 |  |  | $ | 5,547 |  |  | $ | 4,680 |  |  | $ | 5,343 |
Operating loss |  | $ | (3,679 | ) |  | $ | (3,907 | ) |  | $ | (4,557 | ) |  | $ | (3,762 | )
Net loss |  | $ | (3,706 | ) |  | $ | (3,279 | ) |  | $ | (4,314 | ) |  | $ | (3,725 | )
Net (loss) per share, basic (1) |  | $ | (0.32 | ) |  | $ | (0.28 | ) |  | $ | (0.35 | ) |  | $ | (0.30 | )
Weighted average shares outstanding, basic |  |  | 11,524 |  |  |  | 11,741 |  |  |  | 12,209 |  |  |  | 12,323 |
Net (loss) per share, diluted (1) |  | $ | (0.32 | ) |  | $ | (0.28 | ) |  | $ | (0.35 | ) |  | $ | (0.30 | )
Weighted average shares outstanding, diluted |  |  | 11,524 |  |  |  | 11,741 |  |  |  | 12,209 |  |  |  | 12,323 |
|  | Year ended December 31, 2015 |
|  | 1st Quarter |  |  | 2nd Quarter |  |  | 3rd Quarter |  |  | 4th Quarter |
Selected quarterly financial data: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 10,529 |  |  | $ | 9,386 |  |  | $ | 9,586 |  |  | $ | 10,006 |
Gross profit |  | $ | 8,411 |  |  | $ | 7,315 |  |  | $ | 7,627 |  |  | $ | 8,002 |
Operating income (loss) |  | $ | 2 |  |  | $ | (1,225 | ) |  | $ | (768 | ) |  | $ | (547 | )
Net income (loss) |  | $ | (10 | ) |  | $ | (1,231 | ) |  | $ | (770 | ) |  | $ | (591 | )
Net (loss) per share, basic (1) |  | $ | (0.00 | ) |  | $ | (0.11 | ) |  | $ | (0.07 | ) |  | $ | (0.05 | )
Weighted average shares outstanding, basic |  |  | 11,375 |  |  |  | 11,564 |  |  |  | 11,540 |  |  |  | 11,465 |
Net (loss) per share, diluted (1) |  | $ | (0.00 | ) |  | $ | (0.11 | ) |  | $ | (0.07 | ) |  | $ | (0.05 | )
Weighted average shares outstanding, diluted |  |  | 11,375 |  |  |  | 11,564 |  |  |  | 11,540 |  |  |  | 11,465 |
(1) | Basic and diluted net (loss) per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per share amounts will not necessarily equal the total for the year.

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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=68076893&loc=d3e1280-108306 + Details
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