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The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
The Company and Summary of Significant Accounting Policies |
Schedule of securities outstanding which were excluded from the computation of diluted net loss per share as their inclusion would be anti-dilutive. | The following table sets forth securities outstanding which were excluded from the computation of diluted net loss per share as their inclusion would be anti-dilutive (in thousands):
|  | December 31,
|  | 2017 |  | 2016 |  | 2015
Options outstanding to purchase common stock |  | 307 |  | 522 |  | 839
Employee stock purchase plan |  | — |  | 44 |  | 44
Unvested restricted common stock units |  | 376 |  | 148 |  | 24
Convertible debt |  | 1,081 |  | 926 |  | —
Outstanding warrants |  | 663 |  | — |  | —
Total |  | 2,427 |  | 1,640 |  | 907

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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