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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Non-Cash Compensation Expenses | Stock-based non-cash compensation expense related to stock options, restricted stock grants and the employee stock purchase plan were recorded in the financial statements as follows (in thousands):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
|  | (unaudited) |  |  | (unaudited) |
Cost of revenues |  | $ | — |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | 9 |
Selling and marketing |  |  | 84 |  |  |  | 84 |  |  |  | 238 |  |  |  | 242 |
Research and development |  |  | 128 |  |  |  | 153 |  |  |  | 375 |  |  |  | 473 |
General and administrative |  |  | 196 |  |  |  | 287 |  |  |  | 557 |  |  |  | 903 |
Total non-cash stock compensation expense |  | $ | 408 |  |  | $ | 527 |  |  | $ | 1,173 |  |  | $ | 1,627 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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