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Restricted Stock Units (Tables) - Restricted Stock Units (RSUs) | 9 Months Ended
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Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of Restricted Stock Units Activity | A summary of restricted stock units (“RSUs”) granted, vested, forfeited and unvested outstanding as of, and changes made during, the nine months ended September 30, 2017, is presented below (shares in thousands):
| RSUs |  | Weighted Average Grant Price
Unvested RSUs outstanding, December 31, 2016 | 3,196 |  |  | $ | 0.62 |
Granted | — |  |  | — |
Vested | (724 | ) |  | 0.42 |
Forfeited | (85 | ) |  | 0.61 |
Unvested RSUs outstanding, September 30, 2017 | 2,387 |  |  | $ | 0.68 |
Summary of Compensation Expense | Stock-based compensation expense related to RSUs is allocated as follows for the three and nine months ended September 30, 2017 and 2016 (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Cost of revenue | $ | 10 |  |  | $ | 9 |  |  | $ | 29 |  |  | $ | 26 |
Research and development | 14 |  |  | 10 |  |  | 43 |  |  | 29 |
Sales and marketing | 2 |  |  | 3 |  |  | 6 |  |  | 4 |
General and administrative | 55 |  |  | 82 |  |  | 236 |  |  | 243 |
| $ | 81 |  |  | $ | 104 |  |  | $ | 314 |  |  | $ | 302 |

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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=96867065&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=96867065&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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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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